I've never written a restaurant review before but I've just come back from such an awful lunch experience at No.20 I feel obliged to warn other potential diners of the mistake they'd be making in booking a table here.

My party chose No.20 for a working lunch for 5 on a thursday. The place had more staff than diners, not that you'd notice. Waiting staff were unattentive, looked thoroughtly bored and completely devoid of any personality.
Service was slow – despite a near empty resturant – and unfortunately the food was not worth the extensive wait.

The starters were average but edible, if you choose to ignore this advice and head to No.20 anyway, please avoid the chopped salad, which at £5.00 consisted of a very small bowl of undressed lettice and radish shavings.

The outlook was not promising but we refused to write the place off without giving the main meals a go. The burgers were passable but nothing you couldn't find at a half decent pub. Things took a turn for the worse when we dug into the macaroni cheese which was dry, bland and served on a saucer. The fish meal claimed to be john dory but by the serving size could well have been 3 fried goldfish.

The only positive thing to say about this place is, that after our polite complaints to the manager, the offending dishes were removed from our bill.

London is full of fantastic dining experiences – this is certainly not one of them.