You might be surprised about the apple - try a big supermarket like Tesco or even Dunnes - John West is a common brand.
I use linseeds ground up in a coffee maker to make a type of porridge with ground almonds and bran - yum! Also good in LC bread or muffins. Never tried the oil, but it's supposed to be good. Can't imagine just glugging it, though :O
Babs