A bit of a stab in the dark here but nothing ventured, nothing gained. The former London and North Western Railway had the figure of Britannia as the central part of the company crest. They had a very large works at Wolverton with it's own works fire brigade so I suppose it's possible that it could have been worn by them. The LNWR amalgamated with others in 1922 so it would date the badge to that time. Just a thought.
