I have got mine done through Dodson and Horrell. A basic one is £15 and a more indepth one is an extra £47.
If you go to their web page click on the nutritional help and it will show you what you get there.
any feed company will do it and our vets do it too. Weve just had our haylege done and results have come back - extremely good haylege, perfect for racehorses.......do you have any extra for sale?'