I got one of these at the weekend, £29. The griddle top comes off and you can use it to heat a pan or wok.
I do not want a full kitchen in my TD more of a breakfast bar. These Gaz cans are freely available in the UK so a good choice for me. I will post the bracket and rig it needs to hang off the back of the TD when I have made it.

Better photos at
http://www.outdoorgear.co.uk/eshop.asp? ... ffid=45860
But I got mine cheaper
Clive