- Hatfield, Hertfordshire
- Hertfordshire
- St Albans
- Verulamium
- St Albans Cathedral
- Berkhamsted
- Bricket Wood
- Hemel Hempstead
- Hoddesdon
- Royston, Hertfordshire
- Hitchin
- Apsley, Hertfordshire
- Welwyn Garden City
- Borehamwood
- Welwyn
- Watford tube station
- Harpenden
- Hertford
- Potters Bar
- Bishop’s Stortford
- Tring
- Rickmansworth
- Watford Junction railway station
- Nettleden
- Much Hadham
- Kings Langley
- Baldock
- Buntingford
- Cheshunt
- Aldbury
- Ashridge
- Sawbridgeworth
- Ware, Hertfordshire
- Bovingdon
- London Colney
- Elstree Studios
- Bushey
- Redbourn
- Elstree
- Willian, Hertfordshire
- Nash Mills
- Markyate
- Bourne End, Hertfordshire
- Croxley Green
- South Mimms
- Wheathampstead
- Hinxworth
