It's always a question of "is it worth it?". If they take 7.5%, but make sure the money actually reaches the destination and doesn't disappear along the way, then I would say it's pretty good. Unless there are any alternatives that are reliable and are cheaper? I don't suppose you can just send 100 quid from a UK account to someone in Somalia,because they might not have an account, or live very very far away from the nearest "bank". And even if you could, I imagine both banks would take a nice cut, probably just as large or larger than 7.5%.