Hi,
Have a look at
http://bit2brit.co.uk, you can buy and sell BTC here, and trade btc for gbp:
http://bit2brit.co.uk/sell-bitcoins-uk at a good exchange rate. You can receive your GBP via Wire Transfer within 3 hours of block confirmation of your btc, or same day dispatch bank notes via Royal Mail Special Delivery.
We are based in the UK and offer personal meetings to trade large sums over 2k.
Please PM me or email me at
info@bit2brit.co.uk if you have any questions.
Best Regards,
The Bit2Brit Team