Instructions:£10 off Voucher for Coal Grill and Bar when you join the coal club (sign up for their free newsletter, obviously you can unsubscribe immediately afterwards if you wish).
Just sign up at http://www.coalgrillandbar.co.uk/home.htm and they will send you the voucher instantly, only took me 20 seconds.
Coal has resaturants in:
* Bristol Waterside
* Guildford (new)
* Richmond - opening in spring