She said customers could use other post boxes or the post office in the meantime and that the 11 pillar boxes should be back in use on Tuesday.

BBC: Kensington post boxes sealed after postman loses keys

The first pillar boxes were erected at St Helier in Jersey in 1852, at the recommendation of novelist Anthony Trollope - who was an employee of the General Post Office at the time.

BBC: Letter boxes: The red heart of the British streetscape

Visitors on the cruise ships that dock here are greeted by scarlet-red pillar-boxes, and even a roof bearing the red, white and blue union flag.

BBC: Falklanders prepare for referendum vote