Bodywork Welding required - any recomendations?

Hi all,
My Mk1 Campaign requires various welding around the bodywork (hole /rot in roof, welding at bottom of doors as i've been told it's beyond the repair of filler, sills possibly, small part of front panel).  I'm keen to get the car back on the road for summer and was wondering if anyone can recommend a good person/garage who can carry out such works?  I'm based in North London but don't mind travelling a bit for someone who can do a decent job of it. I don't just want to give it to anyone in case they butcher it!
Cheers
Dean

hi dude, i`ve got a friend who`s an absolute wizard at metal work and pretty cheap. he`s based in nottinghamshire though, not sure if thats too far for you?