I just got back from work and received this letter from three.
It has a list of other SIMO 12 month options but had this Samsung S7 deal. I think it's pretty good. Especially for 12 months.
AYCE MINS AND TXTS
On feel at home plan (or advanced I think it's called)
They've got an iPhone 7 (32gb) with same call /data allowance for £36 per month.
Apparently these are "exclusive to me" but, seriously, I spend around a tenner a month. I very much doubt I've contributed greatly to be honoured a good deal!