Besides the ad itself (which is spectacular) Warburtons released a few other videos as well.
A behind-the-scenes video with our friend and director Kirk Thatcher:
A sing along version:
The Newsman takes a hard look at the Giant Crumpet:
Finally, Statler an Waldorf ad their commentary while watching the ad:
After watching all that did any one else notice that Floyd seems to appear in both the foreground and background at the same time?
Now there's a story for the Newsman!
You can see more info about Warburtons on their website.