Arriva Watford
A bus operator
- 29 routes
- Vehicles
- X1 Luton - Milton Keynes
- 3 Grovehill - Chaulden
- 4 Grovehill - Chauldren
- 20 Hemel Hempstead - Holywell Estate
- 91 Crouch End - Charing Cross
- 100 Luton Airport - Stevenage
- 101 Stevenage - Luton
- 258 Watford Junction - South Harrow
- 301 St Albans - Stevenage
- 302 Hemel Hempstead - Welwyn Garden City
- 321 Luton - Watford
- 324 Welwyn Garden City - Hertford
- 385 Watford - Holywell
- 398 Potters Bar - Watford
- 398 Northolt - Ruislip
- 725 Stevenage - Rickmansworth
- H12 Stanmore Station - South Harrow
- R1 Maple Cross - Mount Vernon Hospital
- R16 South Oxhey - North Watford
- R17 Hatch End - South Oxhey
- R2 Chorleywood - Northwood
- R9 Garston - Chipperfield
- W1 Watford - Kingswood
- W1 Garston - Maple Cross
- W2 Watford - Meriden
- W20 Watford - South Oxhey
- W21 Carpenders Park - Westfield
- W3 Garston - Watford
- W4 Garston / Meriden - Watford