Updated 25/7/17 with new dates and prices
When it first started, Hot Dinners were among the first to enjoy eating in the House of Lords dining room when it opened to the public. And since then, it's become such a success that it's a regular event (and we've been back again ourselves)
For just a few days during the recess, you can enjoy a weekday lunch at the Peers’ Dining Room. Chefs there have put together a seasonal 3-course menu which will cost a very reasonable £45 per person including coffee and chocolates. Dishes are not at all what you might expect to see on the menu of such a traditional establishment, they're much more Great British Menu if anything.
If you want to book - do it quickly as tables get booked up very quickly. Make sure you accept any offer to have a drink in the bar overlooking the river first - drinks are incredibly cheap and the view's pretty great too.