Where can i buy a UK power adapter for my 'My Book Essential 3TB'

Hello Guys, just wondering if anyone can help me out here. I recently purchased this drive whilst on vaccation to America, 

and now that im back in the UK I need some assistance on where I can find a UK mains adapter for my ‘My Book Essential 3TB’? Would like to get the official WD model if possible, many thanks, Luke

All WD power supplies  will work between 100-240 volts, you may only need to purchase an adaptor plug for UK.  If you want an official WD power adaptor you can purchase it from the WD Store:  http://store.westerndigital.com/store/wdeu/en_GB/DisplayAccesoryProductDetailsPage/productID.198283400/categoryId.13833100