That is from Boscombe Down, serial XX833 and operated by QinetiQ.

http://www.airliners.net/search/photo.search?regsearch=XX833&distinct_entry=true

They did have a GR.3, serial XZ117. I last seen the GR.3 at the Waddington airshow. I don’t know if it is still flying?

http://www.airliners.net/search/photo.search?regsearch=XZ117&distinct_entry=true

Brilliant shots there like the jag shots. It says on one off those pictures that the airframe is going to be retired.

James