“Bitcoin has its first British boozer. The Pembury Tavern in Hackney, east London – as well as its sister pubs in Cambridge, Norwich and Peterborough – are now accepting the virtual currency. The system is quick and effective. The bar staff press two buttons on the till and the screen displays a QR code. The customer opens their digital Bitcoin wallet, takes a snap of the screen and confirms the payment. The staff press one more button and the transaction is complete. Snapping the QR code in a crowded bar could be a challenge but in a quiet pub it is faster than paying by card.”
http://www.guardian.co.uk/technology/shortcuts/2013/jun/23/britains-first-bitcoin-pub