Thanks Karma and Joules for your advice.
I understand what you are saying about including bone, if I go raw I would use mince that includes it.
The reason I thought about going raw is because I did not want to deprive Ozzy of what seems like the best diet
But I don't think I am confident enough I will stick to kibble (Wainrights) and cooked meat.
I am looking for a supplement to add to make sure he is getting all the nutrients he needs, do you have any advice.
I have looked at Keepers Mix but the only reviews I could find said the dogs would not eat food with this included.
Bionic Biotic by Pooch & Mutt seems to have really good reviews.