Welcome. Also had a roof from Jack Smith Trimmers and you can’t go wrong for the price, it’s well worth the trip down.
Will take some pics today. BillyB has messaged me on a local garage.Hi and welcome from me in South Ayrshire
As you have already found out hoods are very dear up here .
Swansea is a good bet at the cost even with the hotel and they drive it will still be cheaper
As for a garage near you in I'm a South Ayrshire so somebody like at @BillyB would probably be able to recommend somebody closer to you as he is in Edinburgh.
Your MOT fails don't look too bad exhaust will be the worse thing and depends what's wrong with it and like you've said will probably sort the Lambda once fixed the rest of the failures should be fairly straightforward
Is there any chance of you putting some pictures up of the damage to the roof I have managed to repair my wife's roof which was quite badly damaged it's ended up a reasonable standard so may be able to suggest something if can see what's wrong.