Anidel,
re: https://www.ebay.co.uk/itm/273635180493
I'd place this as a c.1953 Holdsworth Whirlwind. This is first year for new "Whirlwind" lugs, replacing Sirocco style lugs. Number 17657, according to Dave Scrimshaw's present prediction guide places to c.1953. (Backed up by his data.)...