Secrets of the Thames: Mudlarking London’s lost treasures opens today at the London Museum Docklands.

This, the first major exhibition on mudlarking, features 350 objects including pilgrim souvenirs.

Becket badges are often found in the mud having been thrown into the water by returning pilgrims keeping it is claimed an old tradition. This exhibition includes a rare pilgrim souvenir as well as a Becket badge.

The souvenir is an image of St Thomas riding on a peacock mounted on a stick. The date is 1300-1500

Secrets of the Thames at the London Museum Docklands continues until 1 March 2026; admission £18. The nearest station is West India Quay DLR.