They do all the great Got, Not Got series
and plenty of other retro sports titles.
From 1981 to 1986, Pakistani squash great Jahangir Khan went undefeated to herald the longest unbeaten run in sport. In the 30th anniversary of his incredible achievements, the book dissects his five-year run, the extent his rivals went to even to win a game and, tellingly, brings to an end the long-held belief that he went 555 matches unbeaten.
Click here for BBC Radio Merseyside interview with Alan Thatcher