This purpose-built venue in Westminster has been no stranger to high-profile clients during its 30-year existence. The 32 event spaces – over seven floors – hold up to 2,500 delegates, while conferences and exhibitions work particularly well here. A £12m refurbishment is underway with a renovation of the external façade, new breakout spaces and improved lighting. For Christmas, up to 1,300 guests can be accommodated for a standing reception, while for dinner-focused festive dos there’s room for 900 people. This year’s theme is Snow Ball: partygoers can expect glittering table centres, shimmering lights and a traditional turkey feast.