Credit to midlandscomics for posting the voucher combo - apply perks5, followed by the Walkers 10% voucher - to get significant reductions on upcoming blu-ray box sets and limited editions.
Stand outs include:
Inception - Suitcase Edition - £25.53
Back To The Future Trilogy Collector's Tin - £37.50
Alien Anthology Limited Edition (Illuminated Egg) - £68.27
The Pacific (HBO TV Series) - £28.95
ALSO - DISNEY BOGOF deal - it appears to take off the discount, before removing the price of the 2nd title. Meaning 2 Disney blu-rays for under £13.
Potential 3% Quidco on top for further savings. NOTE: the code combo doesn't seem to work on other things like game pre-orders.