Sorry to hear of your troubles matey!!
Do you have a project near you where young offenders are trained in mechanics/bodywork? Or even a local college that runs that type of class? If so, they will gladly take your motor off you, and repair the head gasket/rust patches etc free of charge. It will probably take them 8 weeks, but if you can live without the car for that long, you will get it back all fixed, they will even do the the brakes etc (although you will have to pay for the parts) ready for the MOT.
Go on line for Young Offenders Rehabilitation Class's in your area, or just contact the local College.
I did that a couple of years ago with an old Porsche 924, It failed its MOT on brake pipes/discs/pads, floor pan rotten, tappets knackered, the list was endless. I gave it to a Young Offenders Class, 7 weeks later they gave it back and it sailed through the MOT. It also meant that some 16yr old joy riders got a better start in life (I hope)
Anyway, if that helps mate, great, if not, sorry
Toby