Anyone Sell Kefir In the UK...Please?

Hi I am wondering if anyone maybe able to sell me some Kefir in the UK. I sent off to Dom for some a few weeks ago and I haven't heared any thing back yet. It is the time of year when the post is slow so it may just be that. However I just want to cheak out other avenues in case I don't get any Kefir from Dom. Any one know where else I can get it?

I have real health problems that I think maybe helped by Kefir...Please help...Thanks Moonie