[cypher]

I think the food dreamtree mentioned is about the best in the UK, you can buy it here at Zooplus. It's a good mix with plenty of variety but is a little low in protein for a young ham but a few mealworms will soon make that up.
You can give fresh veg daily, working up slowly so your ham gets used to it, fruit is ok as an occasional treat but is too acidic for hams to have too often, millet sprays & small seeds like hemp & flax are good along with sunflower & pumpkin seeds or tiny pieces of nut, all in moderation.