All 25 episodes from the fourth series of the documentary in which michael portillo traces historic rail journeys across britain taking as his guide bradshaws handbook the episodes are high wycombe to stratford upon avon birmingham to stafford stoke on trent to winsford dudley to bridnorth welshpool to aberystwyth portsmouth to gomshall woking to clapham junction london victoria to abbey wood london kings cross to peterborough spalding to grimsby stirling to