Frog cake of the first items to be selected as a South Australian Icon by the National Trust of South Australia during the 165th anniversary of the state, adding the frog cake to the National Heritage Listing as a "movable asset". Historically, the frog cake has sold well for Balfours, and at times sales have peaked in response to events surrounding the company. When the company was placed into receivership in 2000, a column in "The Advertiser" by Rex Jory called for people to support the company by purchasing the cakes, and in response sales doubled to an "all-time high". Similarly, the
National Bakery School Students' Society celebrated it Diamond Jubilee with a sherry party held at the Borough Polytechnic's Edric Hall. In that same year the Lord Mayor of London was presented with special pieces of bread made by students of the Department, which were delivered by hand cart to Mansion House, where the Mayor and Lady Mayoress received students for afternoon tea. From 1969 the National Bakery School moved to purpose built accommodation within new extension buildings of the then Polytechnic of the South Bank, which were opened by the Duke of Edinburgh. In 1989 the School yet again baked a cake for