In Anne Bradford's book, Eddie Baker claims that Enfield Precision Engineering in Westwood produced parts of the guidance mechanism for the Bristol Bloodhound missile.
He doesn't give any details about what exactly was produced, only that it required such high quality that it was difficult to find the right personnel to do the work during the war. This is intriguing, since the Bristol was not introduced until much later in 1958. Perhaps he was referring to that they had trouble finding personnel for the precision work done during the war and a continuation of that effort after the war took part in the Bristol Bloodhound project?
(Source: Royal Enfield, the story of the company, by Anne Bradford)