The Sloane Club has quite a history. Founded in 1922 by Princess Helena (daughter of Queen Victoria) as the Service Women's Club, it was exclusively a place for women for decades – men were finally allowed over the threshold in the 1970s. It remained a club with members-only access until relatively recently when it grew across the corner of Lower Sloane Street, opening a restaurant, bar and hotel, Sloane Place. Its latest addition is the opening of the Roof Terrace Restaurant with, just until the end of August, a lusciously green space dedicated to celebrating summer. Now it has to be said that when I visited, on the eve of Wimbledon's finals weekend, the summer in London was not experiencing the heatwaves currently to be found across southern Europe. It was cool and damp and the big umbrellas and awnings that had been intended as sunshades were doubling up as vast umbrellas. With appropriate British spirit, diners and staff rose above the unreliable British weather – as