In 2011 Britain’s first skyscraper was finally given Grade I listing. The citation for 55 Broadway — the Gotham City-ish home of Transport for London, which sprouts up from St James’s Park Station — said that the building was important in a number of ways: its architect Charles Holden, the designer of Senate House and a range of breakthrough modernist Tube stations in the 1930s, was increasingly recognised as major.