Thanks to sandralovescats @ MSE for the pointer.
Apparently, you can get Four books for FREE selected at random from a whole range including biographies, thrillers, history, romance, classics, etc. Just pay £4.95 p&p
Claim on the Daily Mail Hotline - 01206 307 999
Ref. BK-DM-01/12 (BK-x4)
Daily Mail readers or anyone knowing more about this offer, please share in the comments.