Hey, thanks for the info and the link to the previous thread. The bottom bracket threads are fine - I tried them first.
I found the top corners of the seat tube had broken off - hidden by the seat post clamp. Seller apologised and gave me a partial refund. I bought it anyway and cut the seat post down 10mm or so. I figured the frame, forks, headset and bb were worth having for less than £50..
Are we sure it’s not a Scott super evo? It would make sense with the larger head tube and the riveted on cable guides look a lot like the ones on a super America I had..?
Thanks again to all for the help.