Well, that was different.

[46Tbird]

Perhaps a MiG-23?


The Cold War Air Museum operates out of Lancaster: http://www.cwam.org/wiki/index.php/Aircraft

[Snatch Napkin]

That's it. MIG 23PD.

I had to look at more pics to determine.


EDIT: Wiki reports it as a prototype that wasn't used, though. However, the shape is spot on with what I saw.

[Ratt]

you can buy one if you want http://www.globalplanesearch.com/aerobatic/jets/mig/

[Mike]

This thread sucks