If this set looks familiar, it should. It's almost the same as the USA Sonic McDonalds set. The difference is the Tails. This time, he's on a flying saucer type device with rip-cord, and he won't actually 'fly' like the mini helicopter one which actually generated a bit of lift. (these tails are 3D, not helicopter blades-like) It still looks about as goofy though. Why was this done/changed? It was determined that it was possible (remotely possibly) to kill yourself with the string from the USA version. Yes, a garrotte! Or maybe you eat that triangle or something. Who knows.
Either way, ripcords tend to work better than pull strings so it could actually be an improvement. (the string toy usually knots in the interior after a few pulls and there's no way to get it working again)

In the gallary is a close-up of the Knuckles. His sculpt...leaves some to be desired. The cloud is like a 'cartoony fight' type cloud. This proves that the set was released both in the UK and the USA.