Residents in a village in Berkshire have been left puzzled by the mysterious appearance of a red postbox in the middle of a bridge crossing the River Thames.
The box is fixed to the buttress of the bridge, making it only accessible to those on river boats. People in Sonning-on-Thames have come up with a number of theories for the box's sudden appearance.
Suspicions are it may be the work of a local artist or a PR stunt for a nearby theatre company. The Royal Mail says the box is still a mystery to them.