Watson and Sons

of Wembley.
1837 Business established
1891 of Holborn, exhibited a magnesium flash lamp and the Acme camera.
1915 Private company.
1921 Watson Brothers exhibited X-ray equipment[1]
By 1939 Watson and Sons was a subsidiary of GEC.
The X-ray department developed and was incorporated in a separate subsidiary Watson and Sons (Electro-Medical) Ltd.