Hundreds of fans are expected to descend on the Corsham Sci Fi day to see their favourite Star Wars and Dr Who characters and special appearances from the original film stars on April 17.

Corsham Community Centre will be invaded by extraterrestrial beings next Saturday from 10am as part of a family fun day which is set to raise thousands of pounds for the British Heart Foundation, 16-30 PHAB and Marie Curie Cancer Care.

Well known characters including daleks, storm troopers and Darth Vader walking around the town collecting money for charity as well as meeting fans.

Film stars including Jeremy Bulloch who played Boba Fett and Richard Le Parmentier, who played Admiral Motti in Star Wars Episode IV: A New Hope.

Mr Bulloch and Frazer Hines, who featured in Dr Who will pose for pictures with fans as part of an auction and raffle.