When I was instructing I met a guy who flew a Cessna Caravan in Africa. Sure it gave him some useful experience of turbines, but it was a whole load of hassle going out there, it cost him for the type rating too, and he didn't get a huge amount of hours.
He was very surprised at how many hours I was getting in the UK. Another point is, when he came back from Africa to look for jobs he wasn't flying whereas all the time I was instructing I was networking, gaining experience and of course i was available for those last minute interviews that pop out occasionally! I'm not saying its impossible to job hunt in the UK from Africa, but it can't be easy.