These guys are on eBay as well and I've bought from them before...great sellers! (ebay user id: eoutlet_uk)
You can use your flamedeer voucher for the amazon dock (just a thought!):http://www.amazon.co.uk/Kensington-Dual-Charging-Dock-Iphone/dp/B00267ZYCE/ref=reg_hu-wl_item-added
Two is always better than one. With the Kensington Dual Charging Dock for iPhone and iPod you can simultaneously charge any combination of two iPhone or iPod models. Keep your family of devices ready to go when you are.
Charges iPhone and iPod, 2 at a time
Conveniently charges two devices in one location
Eliminates the need for multiple chargers
Low-profile design fits into your home environment Non-slip feet