The Rex Whistler is an artful space for private dinners, drinks receptions and wine tastings. Opened in 1927, Tate Britain’s restaurant is available for exclusive hire seven nights a week. It’s named after the fine British artist whose wraparound mural still graces its main space today. A widely praised wine list from the in-house wine cellar also demands exploration. For summer months, there’s a lovely garden terrace to be enjoyed too.