Saw this advertised in a Nectar reward card statement today:
Sign up to the Daily Mail subscription service, pay by Direct Debit and receive the first 3 months Half Price!
However, you will also receive a £50 Sainsbury's voucher after 3 months of subscribing (as per their T&C's).
You can then unsubscribe by calling, e-mailing or writing to them.
So essentially this is a bargain if you buy the Daily Mail anyway (all Daily Mail haters need not comment) but with the added incentive of a £50 Sainsbury's voucher, it's a pretty awesome deal!
Make sure you use the Promotional Code: NECTAR
Full Terms and Conditions can be found here: https://dailymail.subscribeonline.co.uk/termsPopUp