Harry Potter no doubt was the book and film franchise of a generation.

The films smashed international box office records and helped put main stars including Emma Watson, Daniel Radcliffe and Rupert Grint on the map.

But did you realise just how many other stars were in the hit films?

9honey Celebrity takes a look at some of the famous faces who made brief background or cameo appearances in the films long before they were famous – and some stars we forgot played some important characters.