There are much better options out there bro. You have T3, GW, ECA stack, all combined with a good caloric deficit there is zero need for DNP.
Besides NO one anywhere is going to just hand out a DNP source just because you asked. UK or not, in reality if you searched hard enough you would find it...but you are not you just want someone to give it to you and that will never happen. You're better off sticking to much safer options anyway.