Thanks for your reply , appreciate your input . I’ve tried to separate the steerer and head stock but not managed as seems seized . What would the numbers on BB represent ? . Wheels are 27 but not sure there original either . Looks like someone tried to make a fixie of it and built from the hub and didn’t exactly make the best of jobs .I'd guess 1960s-70s from the braze-ons. Definitely not bottom end as it has nice cast dropouts on the rear. I'm not 100% convinced the fork is original as it has mudguard eyes and the rear doesn't. Check if there is a serial number on the steerer tube. I guess it's 27" wheels?
The pump pegs are a bit of a puzzle and I'd expect at least one bottle cage braze-on set (but at that time there was a fashion for minimal braze-ons).
Thanks for the extra photo - I agree that those wheels look nasty and - as you say - it's been got-at and made into a fixie.