[Arran]

There a a few outfits that will rewind transformers, Heyboer is one, I have also heard of an outfit in Ohio (I can't recall the name) and a fellow in Maine that also offer satisfactory service. One thing you should ask about is if it would help cut the cost in any way if you sent a stripped core to them, I don't know if they need that portion or not but I'm sure that they have to pay someone to remove the old windings. One nice thing about modern materials is that they could likely rewind a transformer with higher current rating then the original on the same size core, if including an extra tap on the primary for 240 volt line operation doesn't cost too much more I would have that included.
Regards
Arran