Why you should go: Sitting on the bank of the River Thames, across from the London Eye, The Royal Horseguards is home to the One Twenty One Two restaurant. The Daily Telegraph praises the "delicious" food there—and we like the sound of the burrata and beetroot salad, salmon filet with prawns, and chocolate and orange tranche.

What's the big deal? A 3-course set-menu meal and a glass of prosecco for two people is £59—that's a saving of more than 50%. Visit daily for lunch or dinner until 31 March, 2024.