We always take a few of these with us and have never had a complaint yet even when the site rules say no fires. They are made of compressed and treated stuff, you just stick them on your BBQ and light the packet. They do not spit and you don't go to bed smelling of smoke. Although they don't give off a huge amount of heat they do create a nice atmosphere and don't offend other campers. These burn for a couple of hours depending on the ones you buy and the price varies a lot, you can get them from B&M for 99p yet some shops are selling them for £2.48 and more. Asda also sell the Big-K ones and they will burn for up to 3 hours.
Please remember to have a bucket of water handy and don't leave unattended, also make sure your BBQ complies with the site rules regarding height.
Please remember to have a bucket of water handy and don't leave unattended, also make sure your BBQ complies with the site rules regarding height.