I used to feed my lab on bakers and a few other dry foods and he seemed hyperactive all the time etc and I had a word with the vet and he said bakers was full of e numbers and colours etc and said it wasnt really good for him so had a work with a few lad who go shooying and i know feed him arkwrights complete and he loves it, his coat is the best its ever been and he's really happy with it and much more settled now and very switched on and focused when we go out walking or shooting rather than all over the place like he was before.
http://www.gilpa.co.uk/product.php?shopprodid=22

I get it from my local farm supplier for £6 a bag for 15kg. dont get him chicken though as labs suffer with flatulence anyway and the chicken one made him smell rancid lol. i give him the beef one