Not heard of Agoradesk, will give it a try - thanks!

P2P's - I've tried Paxful and Symlix before, but got nowhere with them - also, I know of people who tried to buy Cryptocurrencies there and were robbed of their money by scammers.  I don't fancy being out of pocket.

It's a catch 22 - I can't trust P2P's and I also can't trust Mercuryo and Simplex... AGGHH!