They sell everything from fair trade tea over egg free mayonnaise to vegan bakery products. The prices are moderate to expensive. But the quality makes up for the price. They also have locally produced bread from a college in Leeds.
And they sell vegan chocolate ice cream. :)
And I do agree, visit R K Harris and Sons across the street. Although they don't just do bio, their fruit and veg is great. And the price is even better there. Always nice, always cheap and the combination of the two stores makes you forget about Sainsbury's or Morrison's