I managed to buy this although the price was a tad more, which was fair.
However upon getting home (it was wet when I picked it up and I had to hurry home as the OH was on call) I realised it was too small and it fit because of the huge seat post and stem raiser. I was too busy looking for faults then checking the size.
The seat tube cc is about 52 and the tt is around 54 and I am just under 6ft.
I have cleaned and lubed it, but with the rubbish weather may not get a chance to go out till next week.
Its my first Thorn but I think I will need to get something bigger.