Clyde & Co is urging football fans to join a multimillion-pound group action that will see consumers seek compensation from retailers that were found guilty of illegally fixing the prices of replica shirts.

Adverts have been taken out in regional papers, such as the Manchester Evening News, urging fans of England and Manchester United to come forward in an action against the retailers, which were found to have operated a cartel in the 2000-01 and 2001-02 seasons.