Oh my goodness, so many replies, thank you!!
Well we totally ran out of the ruff and ready, so I grabbed a bag of JWB which is going down fine at the moment.
He literally would not eat for the first few days when he arrived with us, and being very skinny anyway, I was desperate for anything that he would eat and would stay down, which rightly or wrongly the ardens/ruff and ready/pedigree chum tins did. I'd read all the ingredient lists, looked for no additives etc. It's a mine field! He seems to have a pretty good constitution so we are lucky in that respect.
I've googled the Nature Menu and their stuff the comes in frozen ice cubes actually sounds pretty easy and about the same price as I'm spending now. We do have a second freezer too - filled with frozen fruit and other summer garden produce, but becomes progressively more empty in the winter.
And it turns out there is a CSJ stockist on our route to elsewhere next weekend, who apparently has been showing collies for 25 years so that sounds a fab place to further investigate.
Focusfocus - your last line made me smile. That bit, I know we are getting right!!! Endless love from 3 small adoring owners (and 1 large one).
So, we'll stick with what I have here until Saturday, and then go and see what alternatives I can find. Thank you all again for all your posts.