I've been using Coinbase to buy Bitcoin and Bittrex to trade, but now would like to sell some and transfer to a UK bank account. I've looked into various options such as Uphold, LocalBitcoins, CoinsBank, and others, but when I look at reviews for these websites they are not good and don't appear to be 100% safe. Does anyone know a safe way to sell and transfer the funds back to a UK bank account?