Following its integration with payment processor OKPay, Coinffeine will allow customers in over 70 countries to purchase and sell bitcoin.
Payment processor OKPay says it had no option but to pay customer deposits to Mt Gox last month.
The notoriously secretive exchange is gaining traction as a market leader following Mt. Gox's closure.
OKPAY users can now move GBP into OKPay web wallets and transfer these funds to cryptocurrency exchanges.
OKPay - the payment processing company - has told customers it will stop processing bitcoin transactions.