It's being sold by a third party so I'm guessing it is a "universal dock" however it's probably an after market one or a cheap knock off.
The Universal Apple Dock that is being sold on Amazon UK is an Apple product, its just an older model. I believe it was originally released in 2005 (ish)
The one that is being sold at RadioShack is a newer model that was released in 2007 with a remote.