Ok, thanks for all the comments/recommendations.
Who would have thought that choosing dog food would be so complicated. The choice is bewildering. We thought that feeding them Pedigree was doing them a favour, turns out that it is shite and the only thing Pedigree seem good at is marketing.
I have to say, that site that @browellm recommended is ace. Seems to be independent and very comprehensive.
Based on their reviews and searching on line for the best deals (that will also deliver to Fetlar without wanting the equivalent of the Canada Hoard to do so) I have ended up buying some of this:
along with a few trial bags of various treats, again only those with top rated reviews. They will still get the freshly cooked meat or fish daily.
It seems our monthly dog food bill is going to rise by about £50-£60 - Happy to do that though, knowing they are going to be getting better, healthier food.
As for feeding them raw meat and bone, it’s just not practical here. We only visit the butchers every four weeks and buying frozen food online is practically impossible due to the time it takes for parcels to arrive. The meat/fish we cook is bought fresh and frozen in our own freezer. I wouldn’t be happy just defrosting that and feeding it to them, hence the reason for cooking it.
Thanks again for your input.