For one, there's Taylor's Eye Witness. But just select lines. I have two, one ca. 1960s, the other modern. The modern one I can't get a good edge on for the ilfe of me. Probably user error--I'd assume both are the same steel.
There’s this, according to the website they’re made in Sheffield. https://www.eggintongroup.co.uk/. Includes Wostenholm, Joseph Rodgers, and Ibberson brand names. Not sure how big the operation is but may be on the lines of the Canal Street Co-op. Maybe one of the UK members here will enlighten us.
Member AKTI, TSRA, NRA.
"There was a time when young people revered their elders. No one knows when this was." - Bill Heavey https://www.akti.org/
If you go to Ken's link you will see that many knives are identical regardless of whose name is on the tang. They also make an unbranded Simply Sheffield line of knives. All are made in the same factory.
In 2014 I had the pleasure of meeting Trevor Ablett and Ray Cooper at their shop in Sheffield. I'm pleased to see that Michael May is continuing the tradition of making hand made pocket knives...he mentions on his website that he bought a lot of equipment from Trevor Ablett when Trevor retired. cheers