Feed raw sugar beet? Or UK sugar beet pellets. Or find a cake supplier that uses only UK ingredients - soya would be one ingredient that wouldn't be from UK I think. Cake is cheaper than buckets anyway.
We're not 100% sure where we'll end up on this self-sufficiency drive, but generally speaking we've bee operating under the following priority order:
1) Home grown / made
2) Very very local
3) UK
4) near-Europe
obviously it depends what it is.... Our lawnmower is UK made (and likely some near-europe components)... my Car is UK made, but my partners car is near-europe made. Our wellies are french-made - there seems to be no "proper" wellies made in the UK anymore... only kids-style jelly things.
anyway, you get the point... but with something like animal feed, my feeling is that it should all be coming from the same county at the least, if not from our own farm.
With this in mind, I'm very interested in the sugar beet suggestion... I'd not considered it as a nutrient-rich food source before. I, probably wrongly, thought that is was just a suhgar source.
According to a google, the nutrients look like this:
Crude Protien - 10%
Calcium - 1g/KG
Phosphorus - 6g/KG
No Vitamin A
I can't find any info on the copper/magnesium/selenium content, if any. Perhaps that'd because they're not present in any serious way.
Sugar content varies between non-molassed and molassed SBP.... I'm not sure what the bagged pellets are.
Give the above info only.... I'm not sure that I'd be giving them anything more than a little protein and sugar. The nutritional breakdown actually looks an awful lot like meadow hay, but with added sugar.