Had a bargain.... 65 quid posted for the above (not the bloody gasket lol)...

 

Has no gasket so it's blowing, where can I get one guys please? 

Make one! A piece of tin and tin snips needed!

Trace the flange onto the tin then cut it out.

home made gasket. If need be use abit of exhaust paate to seal it.

(Baked bean tin always works well)

Pence from an auto factors

Found a suitable gasket.. just ordered it