UK Mains charger for Galaxy Tab 3.8 (mini usb)

[AC Question]

Hi there. This is probably a boring subject, but the charger that came with my tab 3.8 has never worked well, and I wondered if anyone can recommend a UK mini usb one-piece mains charger? (I have an EU one piece charger that works brilliantly). I worry about some of the cheaper ones and whether they can do damage.
Thank you.
Lesley