In the UK, warranties mean very little. You're covered most by the Sales Of Goods Act, which covers any goods sold to the UK market, i.e. including grey import goods. The responsibility lies with the vendor to provide repair or replacement in the event of a malfunction due to design or manufacturing (i.e. not your fault cos you dropped it in a river).

Check it out, it lasts for approximately 6yrs, but generally the more expensive the item, the longer you'd expect it to work fine i.e. free from any manufacturing defects.