Calling at: Flitwick, Harlington, Leagrave, Luton, Luton Airport Parkway, Harpenden, St Albans, West Hampstead Thameslink, London St Pancras (Intl), Farringdon, City Thameslink, London Blackfriars, London Bridge, East Croydon, Gatwick Airport, Three Bridges, Balcombe, Haywards Heath, Wivelsfield, Burgess Hill, Hassocks, Preston Park, Brighton