Maker of No. 115 fuze: Swan monogram?

[Darkman]

I have this No. 115 Mk I fuze originally made in 12/1918 by a maker with the monogran of a swan and letter "O" or zero. (Long necked bird with wing extended.)
Presumably it sat in stores until inspected and refilled by RL in 9/1924, at which time it was redesignated as a No. 115E Mk II.
Would anyone know who the maker was please?
Thanks, Graeme

 

[ron3350]

The swan logo may be United Brass Founders, Empress Foundry, Manchester, UK.

 

[Darkman]

The swan logo may be United Brass Founders, Empress Foundry, Manchester, UK.

Thanks Ron,

I’ve now found other posts that confirm your suggestion. 4 companies merged to form United Brass Founders, and the Manchester company also had a works at Ormskirk, Lancashire - so I would assume the O beside the swan would indicate Ormskirk.