If the buyer wants to own exactly bitcoin and keep it in his wallet, he will have to make some actions on the cryptocurrency exchange. Now you can buy/sell bitcoin in UK on a large number of special sites. The transaction takes place in several stages:
Cryptocurrency exchange takes a small amount from the transaction. For this, it provides its security through a special escrow account in order to avoid fraud.
Particular attention should be paid when choosing an ad. The seller has the right to set a price that can be very far from the market. And the buyer can choose the proposal that he likes most. How to buy and sell bitcoin for profit, it is better to read again in the rules of the exchange. On every trading site, they have their own details.