While shopping online I noticed in the House and pet section,tab at top,it includes Mobiles,games and even a x box elite console and vouchers work against most of these items,as i have the console in my basket and it's total is
Total remaining to pay £246.46
Guide price £254.71
Service charge £3.75
eCoupon - £12 off your groceries - £12.00
Just in case you've never known this or noticed,just a tip,might be handy for some.