Hello Jason, great to have a Scotsman join us here. Married young too, both 19 and got her on to bikes with me, that took care of that problem. Your Fuji sounds really nice, must be a nice daily commuter to ride. The new frame you picked up at the boot sale looks pretty good in your pictures, very nice build there. The Classic and Vintage Forum might be able to help you with the identification of it, post the pictures there and if you have found it, the serial number in a picture, too. They are a really knowledgeable group there, good blokes all. Surf the forums and find the ones you like, Road Cycling and Commuting Forums may be good to start with. Best wishes with your new frame and build, take care.
Bill
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Semper Fi, USMC, 1975-1977
I Can Do All Things Through Him, Who Gives Me Strength. Philippians 4:13