Ware
Hatfield
Bushey
Welwyn Garden City
Hoddesdon
Harpenden
Saint Albans
Potters Bar
Watford
Hertford
Hemel Hempstead
Borehamwood
Abbots Langley
EN6
LU1
AL5
Saint Albans
Bushey
WD6
Hatfield
Bedmond
SG13
EN11
Hatfield Hyde
Potters Bar
Welwyn Garden City
Watford
Potters Bar
Potters Bar
North Mymms
Hemel Hempstead
Edmonton
London
Crystal Palace
Enfield
Harrow
Watford
Harrow
London
London