Is Lee Mack's one leg shorter than the other? - Would I Lie to You?

Is Lee Mack's one leg shorter than the other? - Would I Lie to You?

Lee Mack: "I trained for last year's Paris Marathon but pulled out when a doctor advised me that one of my legs is shorter than the other." Series 4 Episode 6. The guests are Hugh Fearnley-Whittingstall, Rufus Hound, Miranda Hart and Rhod Gilbert.