Wembley
Camden
Welwyn Garden City
Finchley
Barnet
Hillingdon
Hatfield
Watford
Borehamwood
Southgate
Saint Albans
Edgware
Finchley
Hemel Hempstead
Colindale
Brent
Harrow
Barnet
Brent
Barnet
Harrow
Brent
Colindale
Watford
Watford
Rayners Lane
Harrow
Potters Bar
Potters Bar
Wembley
Brent
Watford
Watford
Slough
London
Amersham
Amersham
London
Slough
Watford