Published between 1987 and 1995 R.A.D evolved out of BMX Action Bike. RAD quickly established itself as (arguably) the main UK Skateboard magazine of the late 80's early 90's under the editorship of Tim Leighton-Boyce.
When RAD moved to a new publisher the core team left and produced Phat which ran for 3 issues before being pulled off the shelves. RAD was later swallowed up as part of Sidewalk Magazine.
RAD ran for 139 isssues with final Issue 139 coming out in June/July 1995. The cover had Neil Urwin ollieing out of a tree bump with old men in background. Sidewalk Issue 1 featured a young Tom Penny on the cover was published in September 1995 with editor Ben Powell and designer Andy Horsley at the helm.
There is an excellent official site for RAD called When We Was RAD.