Calling at: Wivelsfield, Haywards Heath, Balcombe, Three Bridges, Gatwick Airport, Horley, Redhill, Purley, East Croydon, London Blackfriars, London St Pancras (Intl), Kentish Town, West Hampstead Thameslink, Cricklewood, Brent Cross West, Hendon, Mill Hill Broadway, Elstree & Borehamwood, Radlett, St Albans, Harpenden, Luton Airport Parkway, Luton, Leagrave, Harlington, Flitwick, Bedford