Buses
- 20Holywell Estate - Hemel Hempstead
- 142Watford Junction and Town Centre - Bushey - Stanmore - Edgware - Brent Cross, Shopping Centre
- 258Watford Junction - Harrow Weald - Wealdstone - Harrow - South Harrow
- 306Watford - Borehamwood (Circular)
- 319North Watford & Cassiobury Estate Circular
- 320Maple Cross - Hemel Hempstead
- 321Luton - Harpenden - St Albans - Watford
- 322
- 322Berry Lane Estate - Hemel Hempstead
- 328Mount Vernon Hospital - Watford Junction
- 329Watford - Abbots Langely
- 336Chorleywood - North Bushey
- 346Mount Vernon Hospital - Watford
- 347Queens' School - Cassiobury
- 352Hemel Hempstead - Watford
- 385Watford, Morrisons - North Bushey (Circular)
- 398Brookmans Park / Potters Bar - Borehamwood
- 501Watford - Aylesbury
- 602Watford - Hatfield
- 635Watford - Hatfield
- 724Harlow - Hertford - Welwyn Garden City - Hatfield - Heathrow
- 725Stevenage - Watford - Heathrow Airport
- 832
- 832St Michael's School - South Oxhey
- 885Bushey Meads School - Garston
- 951
- 951Watford - Staines - Thorpe Park
- Avanti West CoastWatford Junction - Heathrow Airport, Terminal 3
- R2Watford / Mount Vernon Hospital - Chorleywood
- R16South Oxhey - North Watford Superstores
- RA3Watford - Heathrow
- W1
- W1Maple Cross - Watford / Garston
- W1Watford - Kingswood
- W2Watford & Meriden Circular
- W3Watford & Meriden Circular
- W4Watford & Meriden Circular
- W20North Bushey - Oxhey Hall (Circular)
- W21Westfield Community College - Carpenders Park
- W30Watford - Croxley Business Park (Circular)
- West Midlands TrainsEuston - Milton Keynes Central
- West Midlands TrainsEuston - Northampton
- West Midlands TrainsMilton Keynes Central - Watford Junction
- West Midlands TrainsNorthampton - Watford Junction
- West Midlands TrainsSt Albans Abbey - Watford Junction
- West Midlands TrainsWatford Junction - Euston
Rail Services
- Avanti West CoastEuston - Birmingham New Street
- Avanti West CoastEuston - Blackpool North
- Avanti West CoastEuston - Carlisle
- Avanti West CoastEuston - Crewe
- Avanti West CoastEuston - Edinburgh
- Avanti West CoastEuston - Warrington Bank Quay
- Avanti West CoastEuston - Wolverhampton
- Avanti West CoastGlasgow Central - Euston
- Avanti West CoastLancaster - Euston
- Avanti West CoastLiverpool Lime Street - Euston
- Avanti West CoastManchester Piccadilly - Euston
- Avanti West CoastPreston (Lancs) - Euston
- Avanti West CoastRuncorn - Euston
- Avanti West CoastStockport - Euston
- Caledonian SleeperEdinburgh - Euston
- Caledonian SleeperGlasgow Central - Euston
- LionessWatford Junction - Euston
- LionessWatford Junction - Kilburn High Road
- LionessWatford Junction - Willesden Junction
- SouthernBalham - Watford Junction
- SouthernClapham Junction - Watford Junction
- SouthernEast Croydon - Watford Junction
- SouthernSelhurst - Watford Junction
- West Midlands TrainsEuston - Birmingham New Street
- West Midlands TrainsEuston - Bletchley
- West Midlands TrainsEuston - Coventry
- West Midlands TrainsEuston - Crewe
- West Midlands TrainsEuston - Milton Keynes Central
- West Midlands TrainsEuston - St Albans Abbey
- West Midlands TrainsNorthampton - Euston
- West Midlands TrainsRugby - Euston
- West Midlands TrainsTring - Euston
- West Midlands TrainsWatford Junction - St Albans Abbey