To coincide with the return of the Chelsea Flower Show after two years due to the Covid pandemic Royal Mail has put together a display at the Hackett store on Sloane Street in London.  It features a letter being posted into a crown-topped postbox, all beautifully made from flowers.  It can be seen here: https://www.bbc.co.uk/newsround/61557710.

A display of traditional circular and hexagonal Penfold letter boxes, all draped in different flowers and union jack flags can also be seen in Sloane Street, just up from Sloane Square.  The postboxes are replicas, and Letter Box Study Group member Simon Cowper-Smith took these pictures when he visited on 26th May.