Search a few breakers, I think you might be pleasantly surprised, there is a recommended breaker on this forum somewhere who specialises in Crossfires and has supplied many forum users with parts but I can't remember the name, I think they are somewhere in Lancashire.

If you can get hold of one and then either drive in to a local screen replacement depot, or better still keep a look out for any screen fitters vans parked locally and ask them if they fancy a quick evening job after work you should get it fitted fairly cheaply.

Edit - just googled Crossfire Breakers and there are plenty out there, take a look.