Wader has a point though, yes the Harrier and the Hawk have been used as 'Fighters' by the RAF, However, they were not procured for that role. As for the jet-powered aircraft that Wader listed, the Sabre, Swift and Javelin were bought and used as pure fighters (and you could add the Venom NF's) to that list. I think you will find that the aircraft listed are those that are in the museum at Hendon (with the exception of the Hawk).