Housed in the Royal Institute of British Architects' listed 1930s headquarters, RIBA Café is a stunningly designed contemporary restaurant in a central location close to Oxford Street. Dark timber and steel mesh combine in the impressive interior, with huge windows and a sleek roof terrace to capture a bright, airy feel. The curved sofas are filled with business types at lunchtime, tucking into a modern British menu of brasserie-style classics.