Video of the week: London City Airport's mammoth hunt for WW2 bombs

In what is claimed to be the largest inshore diving project in the country, a team of divers and surveyors have been checking over 400 sites on the bed of the King George V dock which were flagged as showing ferrous anomalies during initial magnetometer surveys.

The vast majority of these sites have been benign, but in February 2018 a 500kg German bomb was found just to the south of the terminal’s east pier, leading to the closure of the airport and the implementation of a 214m cordon while the Royal Navy removed the ordnance for detonation off Shoeburyness.

The survey is essential to ensure the safe installation of 1,100 piles (steel and concrete columns) in the dock bed, which will support a concrete deck the size of 11 football pitches, as part of the £480m City Airport Development Programme. On this new deck, above the dock water, will stand new terminal facilities, eight aircraft stands and a parallel taxiway.