Yeah cheers Dave, might be worth a gamble but might be pointless if I've (hopefully!) Got it sorted when it goes and gets sorted.
Actually ended up calling the welder today to ask a couple questions and he said he was ready for the car! Which was a good surprise, so dropped that off this afternoon for a few days of work, also took a look at the seatbelt bolt area and that's going to be getting done too.
Fingers crossed it all goes smoothly and I could have the car back by Friday! Then just need an MOT arranging