40th birthday party ideas: 40 ways to celebrate in style

Turning 40 is a milestone worth celebrating properly. Whether that means gathering everyone you love for a big birthday party, escaping for a weekend in the country or sitting down to an exceptional meal with your closest friends, there are plenty of ways to make the occasion feel special. From private castles and beautiful countryside hotels to Michelin-starred restaurants and wonderfully unusual party venues, our 40th birthday party ideas are here to help you plan a celebration to remember.

Of course, there's no one way to celebrate turning 40. Some people will want a big party with all their friends and family, while others would much rather spend the day somewhere beautiful with a handful of their favourite people. You might want to stay close to home, book a weekend away or finally organise the trip that's been sitting in the group chat for years. Whatever your style, it's worth thinking about the kind of celebration you actually want before you start booking anything.

There's plenty to consider when planning a 40th birthday, from the guest list and budget to the location and atmosphere. Perhaps you want a celebration that feels like a real occasion, or maybe the best birthday for you would be something more relaxed, with good food and even better company. You could make a weekend of it, try something you've never done before or simply book somewhere you've been wanting to visit for years.

To help you find the right fit, we've rounded up 40th birthday party ideas for every kind of celebration. From grand and memorable experiences to relaxed gatherings, creative activities and affordable ways to celebrate, there's something here for every style and budget. After all, turning 40 only happens once, so you may as well make the most of it.

Unique 40th birthday party ideas

For a milestone birthday, there's no need to stick to the traditional party format. From staying in a castle to exploring a vineyard or dining somewhere completely out of the ordinary, these ideas are for anyone looking to make their 40th feel genuinely special.

1. Book your very own castle

For the ultimate 40th, hire a castle entirely to yourselves. Plenty across the UK are available for exclusive private hire, complete with grounds to explore, grand halls for dinner and enough bedrooms to keep the whole party together under one very memorable roof. It's about as far from a standard birthday celebration as you can get, and the sort of setting that turns a birthday into a weekend everyone will remember.

Explore castles available for private parties:

• Farnham Castle, Hampshire
• Leeds Castle, Kent (pictured above)
• Lympne Castle, Kent
• Hertford Castle, Hertfordshire
• Berkeley Castle, Gloucestershire
• Clearwell Castle, Gloucestershire

2. Stay at a luxury hotel in a countryside location

Treat yourself to a night, or a whole weekend, at an independent hotel in a place you've always wanted to visit. The best come with their own restaurant, bar and spa on site, turning the stay itself into the celebration rather than simply somewhere to sleep between plans. Pair it with exceptional dining and a beautifully designed room to retreat to afterwards, and you've got a birthday getaway that requires very little else.

Our pick of luxury hotels in the countryside:

• Hampton Manor, West Midlands 
• Cliveden House Hotel, Berkshire
• Woodlands Hotel, Hampshire
• Fairmont Cheshire - The Mere, Manchester (pictured above)

3. Go to a vineyard and sip on local wines

The UK's vineyards have come on leaps and bounds, and a day spent among the vines makes for a beautifully relaxed way to celebrate. Most offer proper tours and tastings, but many do a lot more too, from long lunches overlooking the rows to dinners and overnight stays on the estate or nearby. Turn it into a full weekend and you'll have plenty of time to properly unwind and raise a glass to the next decade.

Find a vineyard near you:

• Leonardslee Wine Estate, West Sussex (pictured above)
• Denbies Wine Estate, Surrey
• Hambledon Wine Estate, Hampshire

4. Plan the city break that finally makes it out of the group chat

You know the one: the trip that's been floated in the group chat for years and never actually booked. Make your 40th the excuse to finally make it happen. Round up your closest friends, pick a date and go, whether that's a long weekend in a UK city or somewhere further afield you've always wanted to visit. With great food, drinks and a few days away from everyday life, it's the sort of birthday celebration you'll remember for years.

Explore some of our favourite city venues:

• Rabble, Edinburgh
• Treehouse, Manchester
• The Shepherd Mayfair, London

5. Host a wellness weekend

Sometimes the best way to mark a milestone is to slow right down. Turn your birthday into a proper wellness weekend, whether that's booking into a countryside retreat for spa treatments, yoga and long, unhurried meals, or recreating the same atmosphere at home with your closest friends. Think massages, a cold plunge if you're brave, good food and plenty of time to relax. It's a birthday that leaves you feeling refreshed rather than recovering from it.

Stunning venues offering wellness-based activities:

• Wasing Estate, Berkshire (pictured above)
• Sopwell House, Hertfordshire
• Mad Swans, Bristol

6. Go to a Michelin-starred restaurant

Nothing quite says milestone birthday like a table at a Michelin-starred restaurant. Whichever kitchen you choose, you're guaranteed exceptional food and service worthy of the occasion, whether that's a special-occasion tasting menu or something a little more relaxed but still exceptional. For an extra layer of privacy, look into booking one of their private dining rooms instead, so the celebration is entirely your own.

Discover some of the UK's best Michelin-starred restaurants:

• Wilsons, Bristol
• The Barn at Moor Hall, Lancashire
• Alain Ducasse at The Dorchester, London
• Sketch: The Lecture Room & Library, London (pictured above)

7. Hire a private chef

For an extra edge of luxury, bring the restaurant to you. A private chef lets you choose the menu, the setting and the guest list, whether that's a formal tasting menu at home or something more relaxed in a holiday villa or countryside cottage. It's a wonderfully personal way to celebrate a milestone birthday, with all the polish of a top table but with the intimacy of your own space.

8. Host a black tie celebration

For the ultimate milestone birthday, go all out with a black tie affair. Ask guests to dress to the nines, theme the evening around golden glamour or old-Hollywood elegance, and serve a Champagne tower to really set the tone. It's a properly glamorous way to mark turning 40 and the kind of night that feels special from the moment guests arrive.

Explore venues fit for a black tie celebration:

• Chelsea Old Town Hall, London
• AREA Manchester
• Winchester Cathedral, Hampshire (pictured above)

9. Host a party at your favourite sporting ground

For the sports fan, there's no better birthday than one held pitch-side or on the hallowed turf itself. Plenty of major stadiums and grounds, from cricket grounds and football stadiums to racecourses, offer private hire for events, giving you and your guests access to spaces fans don't normally get to see. Some even offer stadium tours, making it a brilliant and slightly surreal way to celebrate if your favourite team or sport is a big part of your life.

Sporting grounds available for private hire:

• Lord's Cricket Ground, London (pictured above)
• Fulham Pier, London
• St Mary's Stadium - Southampton Football Club, Hampshire
• Huish Park - Yeovil Town FC, Somerset
• The Cooper Associates County Ground, Somerset County Cricket Club, Somerset

10. Head out on a brewery or distillery tour

Whisky, beer, gin or cider, whichever you're partial to, a day trip to a brewery or distillery makes for a birthday that's equal parts fun and fascinating. Learn how it's made, work your way through a proper tasting, then settle in for a long lunch to round things off. It's a great option for anyone who likes their celebrations to come with a bit of substance, and works just as well for a small group as a bigger one.

Find breweries and distilleries perfect for parties:

• Guinness Open Gate Brewery, London (pictured left)
• Bombay Sapphire Distillery, Hampshire (pictured right)

11. Host a lunch or dinner at your favourite museum

Many of the UK's biggest museums now hire out their galleries for private dining, turning a familiar day out into something far more memorable. Picture a long lunch beneath a blue whale, or dinner served among the exhibits once the crowds have gone home. It's an easy way to make a milestone birthday feel genuinely special without needing a theme or costume.

Explore museums available for private events:

• London Transport Museum, London (pictured above)
• Ashmolean Museum, Oxfordshire
• National Football Museum, Greater Manchester

12. Take a trip to the theatre

Have you always dreamed of front-row seats to a West End show? Make it happen for your 40th, whether that's a big, glittering musical or a gripping new play. Follow it up with dinner nearby and you've got a proper night out, the kind of birthday that feels like an occasion from the moment you walk through the doors.

Memorable 40th birthday party ideas

Want your 40th to be the one everyone's still talking about years later? These ideas are all about making an impression, whether that's taking the party on the road, dressing up for a themed celebration or turning one of your favourite pastimes into the main event.

13. Take your celebration on the road with a party bus

Enjoy fine dining while you tour the city with Bustronome, London.

There's something brilliantly simple about a party that comes to you. Hire a private bus for the day or evening and turn the journey into part of the celebration. A vintage-style bus with afternoon tea and a glass of fizz makes for a genteel, scenic way to celebrate, while a fully kitted-out party bus with lighting and a sound system suits a livelier crowd hopping between bars. Either way, everyone travels together, nobody's driving and the party has already started before you've even arrived.

14. Host a party themed around your favourite show

Turning 40 is the perfect excuse to make your birthday about the thing you love most. Pick a favourite show, film or book series, from a Bridgerton ball to a Star Wars-themed bash or a nostalgic nod to Friends, and let it shape everything from the invitations to the dress code. Costumes are optional, but the shared reference makes for a wonderfully personal celebration that your guests can really get involved in.

15. Throw a grown-up house party

Get all the fun of a house party without the clean-up, noise complaints or someone spilling red wine on your carpet. A growing number of venues now recreate that classic house-party feel entirely, with kitchens, living rooms and quirky, homely decor designed for exactly this kind of celebration, but built for a proper crowd and a late licence. It's the best of both worlds: the relaxed, sociable energy of a night in, with sharing plates, cocktails and a DJ laid on for you.

These spots are perfect for house parties:

• The Little Orange Door, Clapham
• The Little Scarlet Door, Soho (pictured above)
• The Little Neon Door, Shoreditch
• The Little Blue Door, Fulham
• The Apartment, Gloucestershire

16. Host a costume party built around your initials

Make it all about you. Ask your guests to dress as anything beginning with the first letter of your name and see what they come up with. It's a simple brief that tends to spark surprisingly inventive results, and the mix of costumes on the night makes for one of those parties people will still be talking about long after the last drink has been poured.

17. Take your closest friends on a ghost tour

For something a little different, gather your nearest and dearest and book a tour of local haunted spots, uncovering the crime, mystery and supernatural tales behind them. It's a brilliant option if you'd rather swap a sit-down meal for something more atmospheric and sociable, and it's easy to follow up with a drink somewhere nearby once you've heard all the scary stories.

18. Throw a murder mystery party

Embrace your theme fully by booking an immersive dinner with The Murder Express Part Deux: Jewel of the Empire, London.

Channel your inner Poirot and turn your birthday into a proper whodunnit. Host one at home with a kit and a cast of willing guests, or go all out and hire a suitably atmospheric manor house in the countryside for the full theatrical effect. Costumes are encouraged, suspicion is inevitable and everyone leaves with a story to tell.

19. Try competitive socialising

Mini golf, darts, shuffleboard and table tennis have all become increasingly popular ways to spend a night out, and they're a brilliant fit for a milestone birthday. Book out a course or a few lanes, add cocktails and street food into the mix, and you've got a party that keeps everyone entertained without anyone needing to sit still all evening. It works just as well for a rowdy group as a more low-key one, with plenty of venues to choose from.

Explore some of our favourite activities:

• Sandbox VR Birmingham and London (pictured left)
• PITCH City of London, Soho, Canary Wharf 
• Shoreditch Balls, London
• Swingers West End, London (pictured right)

20. Have an 80s themed party

If you were born in the 80s, you were born into one of the most gloriously over-the-top decades going. Cabbage Patch dolls, the Rubik's Cube, the Walkman and shoulder pads for days all make for excellent inspiration. Lean into it with a properly themed birthday bash, complete with an 80s soundtrack and suitably bold dress code. It's an easy theme for guests to run with, and a decade with this much personality practically decorates the party for you.

21. Book a private karaoke room

Book a private room and let everyone sing their hearts out without an audience of strangers. Whether you're after rock classics, pop favourites or a questionable Disney duet, the privacy takes the pressure off, so guests who'd never touch a mic on an open stage tend to end up belting out their favourites anyway. It's a brilliant way to mark a milestone birthday: a proper night out, but entirely on your own terms.

Discover private karaoke venues:

• Lucky Voice Holborn and Liverpool Street, London
• Zebrano Soho, London (pictured above)

22. Hire a rooftop

Don't miss our pick of London's best rooftops for private hire (including this stunning rooftop at Los Mochis London City).

Drinks on a rooftop with your nearest and dearest make for a memorable birthday. Look into private hire at a rooftop bar or restaurant for the evening, from award-winning cocktail spots to laid-back rooftop pubs, all with the added bonus of skyline views your guests won't stop talking about. It's an easy way to make even a straightforward night out feel like a proper occasion.

23. Throw an ABBA night

Dancing Queen, Mamma Mia, the works. An ABBA-themed birthday is pure, unapologetic fun, and there's no crowd it doesn't win over. Keep it simple with a soundtrack-led party at home and sequinned fancy dress, or take it up a notch with a night out at an ABBA-themed event. However you do it, it's a theme that needs almost no explaining and always gets everyone up and dancing.

Embrace incredible music at an ABBA-themed venue:

• ABBA Voyage, London (pictured left)
• Mamma Mia! The Party, London (pictured right)

24. Book a private dining room with your closest friends

Consider a private dining option like Scotts Kitchen in Edinburgh which has no room hire fee, simply a minimum spend.

If your idea of a good time is trying out a new restaurant, take it one step further with a private dining room. It gives you and your closest friends a little space of your own, away from the main dining room, whether that's for an intimate sit-down dinner or something more relaxed. It's perfect for anyone who wants exceptional food and plenty of time to catch up, without the fuss of a large-scale party.

Find private dining rooms in our favourite cities:

• Manchester
• Edinburgh
• Birmingham
• Liverpool

Relaxing 40th birthday party ideas

Not every milestone birthday needs to be a big bash. If you'd rather ease into your 40s with good food, good company and a slower pace, these low-key ideas are the perfect fit, whether you're planning an afternoon with friends or a whole weekend of indulgence.

25. Book a pottery party

Try your hand at throwing on the wheel or hand-building with a group pottery session. Plenty of studios now run these as private parties, making them an easy option to book as a group. It's a proper hands-on activity rather than simply watching someone else work, and you leave with something to actually keep: a piece you made yourself to mark the year you turned 40.

26. Host a paint and sip get-together

The Purple Owl in London host a range of classes perfect for parties and private hire.

Show off your creative side with a paint and sip session. Book a class to be led through it properly, or keep things low-key and set one up at home with your friends. There's plenty of scope for what you're actually making, from a canvas to crafting your own mugs or photo frames, and you can pitch it as budget-friendly or a little more indulgent depending on the mood. Add a glass of something sparkling and it's an easy, sociable way to spend an afternoon together.

27. Plan a tea party in the garden

For a summer birthday, a garden tea party can be a beautifully refined way to celebrate. Set the scene with a pretty table, tiered cake stands and plenty of flowers, then let the Champagne flow alongside your favourite sweet treats. It's relaxed enough for a gathering with close friends and family, but still feels like a proper occasion.

28. Book a Champagne afternoon tea

For a classic, crowd-pleasing celebration, you can't go wrong with a Champagne afternoon tea. Finger sandwiches, warm scones and a tiered stand of pastries, all paired with something sparkling, make for an easy way to gather friends and family together. It works just as well for a small, intimate group as a bigger party, and there's plenty of time to sit back and enjoy the occasion.

Discover Champagne afternoon teas:

• Hurley House, Berkshire
• Chicheley Hall, Buckinghamshire (pictured above)
• The Library, London

29. Organise a birthday brunch

1 Lombard Street's bottomless brunch is a fantastic choice for birthday celebrations.

For a slow, relaxed way to mark your 40th, you can't beat a proper brunch. Gather your closest friends at your favourite local spot, order every side going and let the morning unfold at its own pace. Fancy amping things up? A bottomless brunch adds a party edge to the occasion, giving you the leisurely start with a little more sparkle. Looking for ideas? Browse some of London's best brunch options.

30. Visit an art gallery or exhibition

Swap the usual party for something a little more contemplative. Spend the day taking in a favourite exhibition, then round it off with lunch or dinner nearby to properly celebrate. It's a quietly lovely way to mark your 40th: cultured, unhurried and easy to tailor to exactly what you're into.

• Modern Art Oxford, Oxfordshire (pictured)
• Watershed, Bristol

31. Learn a new skill at a cookery class

Turn your birthday into a skill you'll actually keep. Book a hands-on cookery class as a group, whether that's mastering fresh pasta from scratch, sushi rolling, an evening of French classics or a knife-skills masterclass. You'll cook together, sit down to eat what you've made and walk away with something you can put to use at your next dinner party, not just this one.

Find cookery classes perfect for birthday parties:

• Comptoir Bakery School, London
• Divertimenti Cookery School, London (pictured above)

32. Hire a private room in your favourite pub

There's a particular kind of charm to a great pub private room: a roaring fireplace, your own bar tab and that unmistakable warmth that only a proper local can pull off. Whether you're gathering the family for a long Sunday roast or the whole gang for an evening of drinks and dancing, it's a beautifully atmospheric way to celebrate, with none of the stiffness a bigger venue can sometimes bring.

Perfect pubs for party hire:

• The Feathered Nest Inn, Oxfordshire
• The Engineer Primrose Hill, London
• The Woolpack Inn Totford, Hampshire (pictured above)
• The Plough Inn Marsh Gibbon, Oxfordshire

Affordable 40th birthday party ideas

A brilliant 40th doesn't need a huge budget. These ideas prove that some of the best celebrations are about bringing the right people together, whether that's around the barbecue, over a favourite board game or outside in the sunshine with a beautifully packed picnic.

33. Have a big BBQ party

Warm weather and a big garden gathering are a hard combination to beat. Fire up the barbecue, lay on plenty of salads and sides, and let the celebration spill out across the afternoon and into the evening. It's low on fuss and high on atmosphere, the kind of birthday that's less about the details and more about having everyone you love in one place.

34. Hire a lido for the ultimate pool party

Thames Lido in Berkshire is available for private hire.

It's one of those ideas that surprises people every time. Plenty of lidos and outdoor pools across the country offer private hire, giving you and your guests the whole place to yourselves. Add a bar, some loungers and plenty of sunshine and you've got a birthday that feels like a proper occasion without needing to leave the country. It's the kind of unexpected venue that makes for a party people will happily reminisce about afterwards.

35. Have a games night in with your favourite board games

Skip the big night out and gather everyone round the table instead. Dig out the classics, from Trivial Pursuit and Monopoly to Twister if you're feeling brave, and let the evening run on snacks, drinks and friendly rivalry. It costs very little to put on, but a good games night has a way of turning into one of the most memorable evenings of the lot. Just try to keep the competitive streaks in check.

36. Have a birthday sleepover with your besties

Keep it low-key and low-cost with a proper sleepover: pyjamas, your favourite films and none of the usual party admin. Add a theme if you fancy it, whether that's everyone in matching onesies or dressed head-to-toe in one colour, and let the evening unwind at its own pace. It's a lovely, easy way to celebrate with the people who know you best.

37. Host a family sports day

Bring back the joy of a proper school sports day, with egg and spoon races, sack races and three-legged relays. Get the whole family involved, from the smallest kids to the grandparents cheering from the sidelines, and finish with a big spread of picnic food and a well-earned trophy for the winner. It's competitive, ridiculous fun and one of those birthdays that ends up in everyone's photo albums for years.

38. Host a movie marathon party

Take movie night up a notch by hiring a private screening room rather than squeezing onto the sofa. Many independent cinemas now offer boutique screens for private hire, complete with proper seating and a screen far bigger than anything at home. Bring your own snacks and drinks and, since it's your birthday, total control of the line-up. A rom-com marathon, a horror trilogy or your all-time favourites on repeat: whatever it is, nobody's arguing with the birthday person's picks.

Hire your own private screen:

• Curzon Canterbury Riverside, Chelsea, Colchester, Hoxton, Kingston, Oxford (pictured above)
• Highland Cinema, Fort William

39. Spend time volunteering

Mark the new decade by giving back rather than just celebrating for yourself. Pick a cause or charity close to your heart and spend part of your birthday volunteering, whether that's on the day itself or as part of the wider celebration. It's a meaningful way to start your 40s and can end up being one of the most rewarding birthdays of the lot.

40. Host an elevated picnic

If your birthday falls in the warmer months, take the picnic somewhere more refined. Swap the usual sandwiches for a hamper put together by your favourite restaurant, pack a bottle of Champagne on ice and finish with a beautifully made birthday cake from a local baker. It's a wonderfully simple way to celebrate, polished enough to feel like an occasion and relaxed enough to actually enjoy.

Planning your 40th birthday

Whether you’re planning an intimate dinner, a big night with friends or something completely different, turning 40 is a good excuse to celebrate in a way that feels personal. Once you’ve settled on the kind of celebration you want, the next step is finding a venue that brings it all together, from private dining rooms and stylish restaurants to larger party spaces.

If you’re celebrating in the capital, take a look at our guide to 40th birthday party venues in London for more inspiration on where to host your milestone birthday.