3/10 Tim Dunn goes behind the scenes at London's Kings Cross station. (R)
4/10 Tim Dunn visits the Ribblehead Viaduct in the Yorkshire Dales. (R)
5/10 Tim Dunn explores Metroland and the area around the Metropolitan Railway. (R)
6/10 Tim Dunn explores St Pancras station in London and its sister hotel. (R)