In the final episode, Paul and Symon - who were filmed at seven growing up in the same children's home - have an emotional reunion in Australia where Paul emigrated as a teenager. And we catch up with Neil, one of the series' most memorable characters who, as a seven-year-old in Liverpool dreamt of becoming an astronaut, but tragically in 28 Up was found homeless and struggling with mental health issues. Yet he surprised viewers in 42 Up when he reappeared as a Liberal Democrat councillor in Hackney. We catch up on the most recent chapter of Neil's extraordinary life.