Peterborough Leather aka Gunn of Whittlesey often had a stall at the Peterborough Expo (at the East of England Showground) each year. Joyce and Edwin with the help of Edward and Elaine Tuijl would take their two caravans and make a large stall in two awnings. Justin had fond memories of visiting this show with steam engines and speedway racing.
Here is a YouTube video of Expo: