Saw yesterday on coindesk there is a new UK exchange opening - www.coinfloor.co.uk: -

http://www.coindesk.com/uk-bitcoin-exchange-coinfloor-opens-registration-incentivizes-early-adopters/

Further information here: -

http://www.reddit.com/r/Bitcoin/comments/21i77z/coinfloorcouk_native_uk_exchange_goes_live/

I'm not affiliated with this in anyway - I want to let fellow Brits know about this  

We need a decent exchange for the UK.