Five minutes from my desk: Tall Tales

In 1962, while still being built, the BT Tower overtook St Paul's Cathedral to become the tallest building in London at a total height to 190 metres (620 ft) - height includes pointy ariel bit.

Once they finished it the BT Tower was taller thank the Millbank Tower down by the River SW1 (which had been put up faster) to once again become the tallest building in the country, titles it held until 1980 when the Nat West Tower in the City was completed.