No problems with Vanguard at all. £100K minimum initial investment per fund, of course. I place trades by phone. A Contract Note arrives and I pay by Faster Payments. (I was able to test my bill payment by sending £1, and eventually got it back when Vanguard UK could not match it with any purchase.) There is no certificate or acknowledgement of settlement, but I am sure that they would contact me if the money did not arrive. I get regular statements by post, and annual reports via email. Really boring, which is as it should be.It is Vanguard Developed World ex UK, by the way. I use Vanguard Emerging Markets ETF to fill the gaps.