Buy Mobile Phones gives you 14 days from the date of the bill to send your
claim in. It can take up to 10 days to receive a bill so at most you get 3
days to sort your claim out.
I think the high risk thing is actually counter productive for BMP. I feel
so scared of missing that time window that it's likely to be something I
won't forget.
I think when you've got a cashback deal that gives you a nice 28 days
you'll probably be lulled into thinking you've got plenty of time, you'll
sort the vouchers out when the time comes and once you get the bill it
goes into a draw to be sorted later.
Whereas with BMP I'll probably have the letter, voucher and bills
photocopied (for my records) and put in an envelope with the address
already on it ready for when the bill arrives.