Publisher-supplied variations, newest variation number first. Differing rows with the same variation number are preserved; no missing historical changes are reconstructed.
#8 · Registered
Effective
31 May 2026
Received
16 April 2026
X4 · Luton Airport – Aylesbury
via Central Railway Station, Sir Henry Floyd School
Vary timetable.
Operating between Luton Airport and Aylesbury given service number X4 effective from 31 May 2026. To amend Stopping Places.
#7 · Registered
Effective
22 February 2026
Received
9 January 2026
X4 · Aylesbury – Leighton Buzzard
via Central Railway Station, Sir Henry Floyd School
Vary route.
Operating between Aylesbury and Leighton Buzzard given service number X4 effective from 22 February 2026. To amend Route.
#6 · Registered
Effective
31 August 2025
Received
18 July 2025
X4 · Aylesbury Bus Station / Sir Henry Floyd School, Aylesbury, Bucks. – Leighton Buzzard Railway Station, Beds.
via Central Railway Station, Sir Henry Floyd School
Vary timetable. V6
Operating between Aylesbury and Leighton Buzzard given service number X4 effective from 31 August 2025. To amend Timetable.
#5 · Registered
Effective
1 June 2025
Received
17 April 2025
X4 · Aylesbury Bus Station, Bucks. – The Point, Milton Keynes, Bucks
via Central Railway Station, Sir Henry Floyd School
Route, stopping places, and timetable variation.
Parts of Bletchley, and central Milton Keynes removed, route changes at Leighton Buzzard and central Aylesbury (V5 06/2025).
Operating between Aylesbury Bus Station, Bucks. and The Point, Milton Keynes, Bucks given service number X4 effective from 01 June 2025. To amend Route, Stopping Places and Timetable.
#4 · Registered
Effective
5 January 2025
Received
21 November 2024
X4 · Aylesbury – Central Railway Station, Milton Keynes
via Central Railway Station, Sir Henry Floyd School
Route, stopping places, and timetable variation (V4 11/2024).
Operating between Aylesbury and Central Railway Station, Milton Keynes given service number X4 effective from 05 January 2025. To amend Route, Stopping Places and Timetable.
#3 · Registered
Effective
3 November 2024
Received
20 September 2024
X4 · Aylesbury – Milton Keynes
via Central Railway Station, Sir Henry Floyd School
Route, stopping places, and timetable variation (V3 10/2024).
Operating between Aylesbury and Milton Keynes given service number X4 effective from 03 November 2024. To amend Route, Stopping Places and Timetable.
#2 · Withdrawn
Effective
1 September 2024
Received
31 August 2024
X4 · Aylesbury Bus Station – Milton Keynes Central Rail Station
via Sir Henry Floyd School
Route, stopping places, and timetable variation (V2 09/2024).
Monday to Saturday excluding public holidays.
#1 · Registered
Effective
1 September 2024
Received
18 July 2024
X4 · Aylesbury – Milton Keynes
via Central Railway Station, Sir Henry Floyd School
Route, stopping places, and timetable variation (V1 08/2024). Monday to Saturday excluding public holidays
Operating between Aylesbury and Milton Keynes given service number X4 effective from 01 September 2024. To amend Route, Stopping Places and Timetable.
#0 · Registered
Effective
7 January 2024
Received
23 November 2023
X4 · Aylesbury – Milton Keynes
via Central Railway Station, Sir Henry Floyd School
Monday to Saturday excluding public holidays
From: Aylesbury
To: Milton Keynes
Via: Central Railway Station, Sir Henry Floyd School
Name or No.: X4 / X40
Service type: Normal Stopping
Effective date: 07 January 2024
Other details: Monday to Saturday excluding public holidays