Thank you all for your replies and useful information. I don't actually pick the bike up until tomorrow but I was told the frame and engine numbers from the logbook. Either he told them incorectly or the DVLA have them incorrect. Until I get the bike in my garage I can't confirm the numbers.
It looks to me like it is a '63 bike but has a later rear subframe and I also think the seat maybe incorrect for a '63 bike as there seems to be a bit of a gap between the front of the seat and the tank.
I got the bike for a very good price
so I can't be that picky!
My Dad and freind John are always going to autojumbles and have a big knowledge of classic bikes, they maybe able to tell more once we get the bike home. I'm only 34 years old and plan to take my bike test this year, so this is a long term project. The plan is to put her back to as original as possible but this will take time.
I've been brought up with Classic bikes as my Dad and friend are such keen enthusiast, I've never had a bike licence or owned a bike so I thought it was time (midlife crisis??)
My 2 young Children keep me and my wife very busy so it's just a matter of finding time to do it (and it WILL happen
Once I get the bike home I'll confirm frame/engine numbers.
All the best and thanks again