Just incase anyone else was thinking of buying the same oil, I just ordered Eight litres of the above for £53 delivered. Check out the eBay page for Matt Lewis Motorsport for similar deals on oil.
http://stores.shop.ebay.co.uk/Matt-L...__W0QQ_armrsZ1
I've bought oil from him before, so called direct and got the slightly better price. Shameless free advertising I know, but I thought I'd share the wealth as it were.