Banksy’s final piece, outside London Zoo in Camden, north London, shows a gorilla lifting the shutter to release a sea lion and birds, while other animals appear to look on from the inside.
But the series of artworks was set in motion with a piece on 5 August appearing to show a goat perched on a ledge as rocks fall on a wall in Kew Green in Richmond, south-west London.
This was swiftly followed on 6 August with a work depicting two elephants reaching for each other’s trunks, and three monkeys hanging from a railway bridge in Brick Lane, east London, on 7 August.
By day three, online speculation was rife as to whether the series had a deeper meaning.