Why the hell would this page exist if they didn't trade with bitcoin? https://www.xe.com/currencycharts/?from=XBT&to=GBP&view=5Y
There are sites that just show the prices. XE is one of them. They show average prices for "conversion", but they don't "exchange".
Just think of preev.com, or even better, of this multi-converter.
I've been using XE for years when I went abroad to show an average price between two certain currencies (local currency vs my country currency or local currency vs EUR) and I didn't know that they do exchange too.
And from what I understand, what they do is money transfer, like Western Union. Of course, when you do this internationally, Forex Exchange may occur. Just Forex doesn't handle Bitcoin.
Also, when sending money, the sender may not have to show that many papers indeed, but the receiver may have to show them (edit: at least the ID)
- more than I've seen people use for literally anything else they could do. 