Not sure there's any around at the moment, I think you've just missed one. Call into MM & get on their mailing list, then when they come round again you'll probably be sent one.
Be good for you to put an intro in the members section giving interests etc. so we know who you are.
it will weld up to 5mm with preparation as I have the older type gas Clarke 150te then you have to watch for its thermal cutout and time it right so it dosnt cut out
ive welded thin steel with it as well
with building wood burners ive mixed between the steel sizes for welding