Hi. Looks like a typical 80's frame with cutout lugs, cinelli mc style fork crown, under bb and top tube cable guides. Any number under the bottom bracket. Its 531c according to the sticker which rides well.
I see you have posted on the his much thread..... How about £80 on a good day?
I've got a Roy Thame frame but not 100% sure it is as its stamped 69115, usually meaning a 1969 frame but he didn't get going till later, another mystery old frame lol
Shaun