First of all it's $300 a month, not sterling.
Second, I've been offshore for 14 years - working for names you will undoubtedly of heard of. Heard of Ericsson for instance ?
Do you honestly think I'd be on here discussing this if I wasn't 100% above board ?
There is nothing 'stinky' about it. The UK does not tax you on your worldwide income, you arrange a split salary agreement with the company you work with. You have a team of international tax consultants behind you to keep you on the straight & narrow & voila... all legal. I even pay schedule d national insurance contributions of something silly like 7 quid a week.
There is nothing to 'arrange' to get offshore status - you just need to leave. OK - there's a form to fill in, which most don't but you get offshore status by not being resident. You say you don't have 'mush' experience then go on to say it must cost more than 300 quid. FFS.
There is no knife edge in what I suggested - it is merely the life of a very ordinary expat. Lots of people do this but to the uninitiated (i.e. YOU), it sounds extraordinary.
Now - on the other hand - this loan/trust business does sound dodgy.