Here's a list of UK manufacturers/assemblers that have disappeared since 1945.
Some such as Spalding were American companies but produced clubs in the UK.
There was quite a bit of cross over between them and a huge number of cast iron heads were produced at Precision Products Ltd in Cumbria using the Shaw Process.
Alex Pirie & Sons
Ben Sayers
Bronty
Craigton
Dunlop
Edinburgh Golf & Sports
Fazer
Forgan
George Nicoll
Goudie
Greentree
Gradidge
Harold Bird & Son
JB Halley
J H Onions
John Letters
Kilbryde Golf Manufacturing Co
Leyland
McGhie (Vauxhall Stores Ltd)
Miscellaneous
Penfold
Petron
Regency
Ryder
Slazenger
Spalding
St Andrew Golf Co
Swilken
Wilson
