Back to the OP's request for info - in those days, embroidered badges were chuffing expensive. Automatic embroidery machines which could produce something like a Sqn crest didn't exist and the badges were hand sewn in places like India at great expense. They could cost a large chunk of one's monthly pay and were usually paid off in installments. My Dad wore no badges on his flying suits until the mid 60s and then it was just one Sqn crest. I have his 249 Sqn crest which is quite clearly hand made, but a real work of art.