I get mine from Asda, Morrisons or Sainsburys! Sainsburys keep them in with all the venison, the other 2 keep them in the sausages bit. I'm not sure about farm shop food, these ones are Scottish Slimmers so are meant for healthy eating, farm shop ones could be full of fat?
I'm sure you'll love the cumberland ones! Just saying the venison ones are more sausagey in a texture way lol