Self-descriptive really. Poundland have a truckload of exspect-branded Protective Skins and Leather Cases for 4th gen iPod Nanos up for grabs. I'd assume they'd fit the new 5th gen model too, but don't quote me on that. I've been using the see-through protective skin for a few months so I can vouch for their reliability. :D
Fairly sure this is nationwide, saw the selection in the Norwich store.