Kay was mostly a packaging company before WW II that supported other companies such as Taylor & Barrett and Charbens with the creation of display sets. Post-war. They also produced limited sets using the production of other companies including Barrett & Sons as well as some under their own name. They appear to have been in business from 1936 until 1958.
Kay Gallery
The only known medical figures they produced was a boxed hospital set incluing a doctor, nurse, stretcher bearers, and wounded supine patient. The actual manufacturer is unknown.
References
N Joplin. The Great Book of Hollow-Cast Figures. New Cavendish Books, 1993.
Kay/Barretts & Sons Medical Staff
Kay/Barretts & Sons Civilian Patient with Arm in Sling
Kay Stretcher Team and Wounded from Hospital Set
Britains and Crescent Nurses, Kay Wounded, and Crescent Doctor
Britains and Crescent Nurses, Kay Wounded, and Crescent Doctor
Nurses, Doctors and Patients from British Hollowcast Companies