Oh that stuff. Its been around for years. I even have some in the cupboard! So, I guess I could sprout it!you can buy it in most supermarkets or health food shops. You will find it in the dried lentil/popcorn/beans/dried fruit area....
Edit: Sainsbury's seem to be calling it something else now. Guess the old name was not pc enough!
http://www.sainsburys.co.uk/shop/gb/groceries/pulses-beans/sainsburys-country-soup-mixture-500g