We've all got our favourite. We've all seen items which we think blurrs the line. The world is always progressing and the sandwich is no different. 

The British Sandwich Association defines a sandwich as: Any form of bread with a filling, generally assembled cold - to include traditional wedge sandwiches, as well as filled rolls, baguettes, pitta, bloomers, wraps, bagels and the like, but not burgers and other products assembled and consumed hot. Hot eating sandwiches are also included.

Sarnies are triangles right? - Wrong!

Around 57% of all commercially bought sandwiches are made with traditional square sandwich bread.

Wraps account for about 5% of all sandwich sales in major retailers. The big new thing with wraps has been the hot wrap, with a number of new products being launched recently. They really do taste great hot!

Panini sandwiches are also gaining in popularity – last year their sales rose by 14% in major retailers, although they still only account for around 2% of sandwich sales.

Baguettes are also popular accounting for around 10% of commercially made sandwiches.