Sorry, Bearheart: I thought the George and Arthur were fairly obvious (you're absolutely right, btw: hence the "Deck the horse... drag the old sword from the deep") and threw in a joke which alluded to a cult UK TV show from the late 70s - a West London version of Starsky and Hutch called "Minder".

Dave and Daniel are indeed two "diggers" who used tunnels amongst other active forms of protest to try to stop anvironmentally suspect projects such as the motorway which cut Twyford Downs into two with a huge ugly scar through a beautiful piece of landscape. As Leadfingers and Countess R said earlier: Daniel was the Swampy who gained quite a profile in the media at the time.