Camping Gaz small heater (Barlborough S43)

This is a burner with a reflector. It screws straight into the top of a blue gas bottle. It was very effective when August bank holiday was frosty in 2014 but I can't see us using it again. Obviously needs to be used with care as it has a naked flame with only a scanty wire guard, so not around children or pets or in a small or unventilated tent.