Just been in Manchester Ancoats PCWorld and bought a Pink Wireless controller for £9.97.
The fella on the checkout was surprised and gutted as it was the last one. He checked local and there were a few in North West stores but none in Manchester.
Could be worth a phone call to your local store if anyone's looking for one.
Note: Instore deal only and wasn't on a reduced ticket so I'm guessing this is nationwide.