Three clips of the British dub are on the Nick Jr. UK website. To get the videos to work, you must install an extension for Chrome called Hola. Then, go on Hola and switch to United Kingdom browsing, and the videos should work, They worked on Maniac Productionz's computer, but may not work on someone else's. The clips can be viewed here: http://www.nickjr.co.uk/watch/ni-hao-kai-lan/#
3/15/2016 UPDATE: Maniac Productionz has found Ni Hao, Kai Lan DVDs on Amazon UK! Hopefully someone can buy them and they use the British dub.