£21 a month for 12 month contract which includes ultd text,ultd minutes and 15gb 4G data...A £90 voucher is included bringing total cost to £13.50 a month (Should be able to sell amazon voucher for £80-85)
For bt customers the package works out as £16 a month with a gift card
£42 cashback via topcashback(quidco seems to have more refusals)
7 day offer starting 00:00 today
"FREE BT SPORT...From August 18 (2016) if you order our BT Mobile 15GB plan (previously 20GB plan) you can sign up for free BT Sport on your mobile. "
Also free use of bt wifi hotspots and bt fon.
Now £70 cashback via topcashback and £5/ month discount for BT Broadband customers. Potentially £16 x 12 = £192 minus £70 tcb and £90 amazon = £32 a year, £2.67 a month