Hello, first post on this forum.
Both Sten Guns and M1 carbines seem to have been issued quite extensivley to the civilian plantation owners in the 'Emergency', as evidenced by these images from British Pathe.
Troops patroling in the jungle used a variaty of small arms including Remington 870's with 20" barrel, Browning A5's, Sten MK5 , Owen, Bren LMG, and MI and M2 carbines. I have read that the M2's were issued to officers as it was thought they would have better fire discipline. In theory a patrol could field up to 4 different types of SAA. Also, De Lisle carbines were used to a very limited extent.