Originally Posted by
unterhausen
Since the dropout is essentially cracked in half already, you need to have that fixed. I'm not sure I would feel comfortable just getting it welded again.
it should be fine to weld it again as it's 5 or 6mm thick. But rather than weld it from the other side I'd grind the whole weld out, bevel it properly, and fill it in again. The existing weld looks a bit untidy so may also be porous and not well fused.
Replacing the dropout would be more expensive I agree. You'd need a specialist framebuilder, a replacement part, and to remove and redo more paint.
Whereabouts in the UK is the OP?