Instructions:Go to this website and send it in
This was available before and is back again. In order to get it, if you already own a dolce gusto and have registered, you provide 3 friend's addresses to give them the £10 cashback and get 160 points yourself for doing the referral on the dolce gusto site.
Whether you get the cashback or not I'm not sure as it looks like some ppl still have yet to receive theirs from the last promotion.
Another thing is I bought the 15 bar pressure version at John Lewis at the beginning of January for £69 in the store whereas the website is much higher. You can probably get it cheaper but I thought it was fair since you also have the additional warranty period from JL.