Lion Bar is a chocolate bar made by Nestlé, previously a Rowntree’s product. The Lion Bar was originally designed by chocolatier Alan Norman.

It consists of a filled wafer, caramel (30%) and crisp cereal (4%) covered in milk chocolate (41%). It was introduced by Eric Nicoli of Rowntree’s in the 1970s, after a trial in the Dorset area in 1977. It was in some areas known as Big Cat until the late 1990s. When Nestlé acquired the brand in 1988, the recipe was changed, as was the packaging.

In Europe, both White Lion and Peanut Butter Lion limited edition bars have also been available, as well as a “king size” variety. The bar is occasionally found in the U.S. and Canada in European import shops.

A Lion Bar Cereal was made and was sold in Europe, later the UK and Ireland.

In recent years the Lion bar has been dramatically reduced in size, which has caused controversy among fans.

Info gleaned from Wikipedia