Aden, Radfan Cyprus ....
It's a very broad question but this is the right place to ask it. A search on this forum will reveal quite a bit on the Jebel Ahkdar Vampire and its particular "little war".
Later contributions in Oman - post the 1970 "replacement" of Said bin Taimur by Qaboos bin Said - were not confined to Dhofar; RAF helicopters assisted in Oman's "reassertion of sovereignty" in the Mussandam in '70-'71 .....