A ladder comprising: a first ladder section including two rails (104, 106) and at least two rungs (108, 110), each rung extending between the two rails (104, 106), the first ladder section including a first ladder section connecting end having a first ladder section locking feature (312, 314, 518, 520); a second ladder section including at least one rail and having a second ladder section connecting end having a second ladder section locking feature (312, 314, 518, 520); a female hinge element provided on a first one of the first and second ladder section connecting ends (130, 132) and having an opening with an internal cam surface; and a male hinge element provided on a second one of the first and second ladder section connecting ends (130, 132) and having a transverse connecting element having a cam follower, the transverse connecting element extending into the opening in the female hinge element such that the cam follower contacts the internal cam surface; wherein movement of the male and female hinge elements (134,136) to an unlocked position allows the first and second ladder sections (102, 112) to rotate relative to each other while movement of the male and female hinge elements (134,136) to a locked position causes the first ladder section locking feature (312, 314, 518, 520) and the second ladder section locking feature (312, 314, 518, 520) to engage each other to prohibit relative rotation between the first and second ladders sections (102, 112); characterised in that movement of the male and female hinge elements (134, 136) to an unlocked position also allows the first ladder section connecting end to move apart from the second ladder section connecting end. a first ladder section including two rails (104, 106) and at least two rungs (108, 110), each rung extending between the two rails (104, 106), the first ladder section including a first ladder section connecting end having a first ladder section locking feature (312, 314, 518, 520); a second ladder section including at least one rail and having a second ladder section connecting end having a second ladder section locking feature (312, 314, 518, 520); a female hinge element provided on a first one of the first and second ladder section connecting ends (130, 132) and having an opening with an internal cam surface; and a male hinge element provided on a second one of the first and second ladder section connecting ends (130, 132) and having a transverse connecting element having a cam follower, the transverse connecting element extending into the opening in the female hinge element such that the cam follower contacts the internal cam surface; wherein movement of the male and female hinge elements (134,136) to an unlocked position allows the first and second ladder sections (102, 112) to rotate relative to each other while movement of the male and female hinge elements (134,136) to a locked position causes the first ladder section locking feature (312, 314, 518, 520) and the second ladder section locking feature (312, 314, 518, 520) to engage each other to prohibit relative rotation between the first and second ladders sections (102, 112); characterised in that movement of the male and female hinge elements (134, 136) to an unlocked position also allows the first ladder section connecting end to move apart from the second ladder section connecting end.