After Romesh Ranganathan and his mum and Russell Howard and his mum, here comes Jack Whitehall and his dad Michael on a trip to the Far East – the gap year he never had crammed into five weeks. Of course, they’ve got previous, having already formed a successful broadcasting partnership on the talk show Backchat and the formula is repeated here - dad posh, curmudgeonly, son posh, innocent and well-meaning.