SKYSCRAPERS ◆ Dubai's Burj Khalifa might hold the crown for the world's tallest building at over 828m, but how dœs London's structures feature in the land of the giants? 183m Tower 42 Originally the NatWest Tower when the bank giants occupied the building until the mid-90s, it's now offices and a top-floor Champagne bar, Vertigo42. 181m St George Wharf Tower Formally the Vauxhall Tower, this residential skyscraper - said to be Britain's tallest - has 50 storeys. 180m The Gherkin Recognisable due to its distinctive shape, 30 St Mary Axe (its official name) is a commercial building in the heart of the city's financial district. 177m BT Tower TV mast, comms transmitter and landmark all in one. 161m Broadgate Tower Offices occupy the 33 storeys. Its 40,000sqm of glass cladding is equivalent to 154 tennis courts. 57