Blockchain.info just launched a way to buy BitCoins with £ GBP using the new Barclay app PingIt which links to your bank account. You simply tell the website how much £ you will transfer and it says the current BTC price. It gives you the phone number, and a reference number which you need to put in the message.

It then appears as BitCoins like an hour later. Best way ever in UK, it's what I have been waiting for, just launched and fantastic!

https://blockchain.info/wallet/deposit-pingit