700C Rims
Try Abel Baker? I think they're in Bishops Stortford. I'm pretty sure he has some. Last time I spoke (ha see what I did there) he was going to check 271/4" stock. He also has in his barn the jig for drilling rims, but it's not in use.
I came through on PM because I don't know how involved he wants to get in selling this stuff.
Carl.