Not n e more unfortunately mate. They had to stop. I think its because they changed distributors (They were with a house distributor but have now converted to Nu-Urban)
I know for a FACT Twisted's label GRID do a subscription service. Also check Formation's website as they did do a subscription service but i'm not sure weather they still do or not.
Its hard to come by exclusives when your not a big name. Alternatively like me, try and get a job in a record shop. (I have to order our DnB section in my shop so if i see any promos i want, i get an extra one for me)
You also may get lucky days in the shop when big names come in and sell test presses.