Phil is joined by SAS hero Billy Billingham - the lead instructor on SAS: Who Dares Wins - and his bulldog Alfie. Phil learns about Billy's inspirational life story as they walk, from knife fights on the streets of Walsall to serving his country on battlefields across the globe in the world's finest special forces unit. Billy shares insights into his extraordinary career and introduces Phil to the philosophy that helps him always go a little further.

Phil's joined by Paralympic sprinter Libby Clegg and her guide dogs, Hatti and Bramble, for a stroll through the stunning Yorkshire Dales, where he sees first-hand how utterly unstoppable she is

Phil is joined by JLS-star-turned-TV-presenter JB Gill and his rescue dog Nala for a walk through the wildly beautiful North York Moors.