Both of ours were brought up on Orijen puppy kibble. High protein and needs to be introduced gradually but gains 5 stars on allaboutdogfood and their review says it's "The best dedicated puppy food on the UK market" and "Orijen Puppy really is about as good as it gets".
It's slightly pricier than some other foods but, in my view, a puppy needs the best available during their formative years and both of ours really thrived on it without any problems whatsoever.
Our worker, Chaz, has now moved on to Orijen Adult and our show cocker, Milly, has moved to Acana Adult, another very highly rated food which is made by the same people as Orijen but slightly lower in protein content.
Bob.