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Route 423 Heathrow Terminal 5-Hounslow

Some scanned timetables are available here
Some ex-London Bus Routes html timetables for this route are available here

Current timetables on TfL site:
        
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Working timetables by date

22 Mar 2008    SCN 18764 New route. Curtailed to Longford Village until Terminal 5 opened on 27th March.
Mo-Fr Sat Sun
12 Apr 2008    SCN 19204
Mo-Fr Sat Sun
24 Jan 2009    SCN 21281
Mo-Fr Sat Sun
25 Apr 2009    SCN 19876 Hail and ride section through Beavers Lane Estate converted to fixed stop operation.
Mo-Fr Sat Sun
05 Dec 2009    SCN 19915 Earlier and later journeys added.
Mo-Fr Sat Sun Box Chr Eve
06 Feb 2010    SCN 23939
Mo-Fr Sat Sun Box Chr Eve
05 Mar 2011    SCN 23532 New contract.
Mo-Fr Sat Sun
03 Sep 2011    SCN 28864 New schedules.
Mo-Fr Sat Sun Box Chr Eve
30 Nov 2013    SCN 35401 New schedules.
Mo-Fr Sat Sun Box Chr Eve
01 Feb 2014    SCN 36035 Rerouted westbound at Hatton Cross.
Mo-Fr Sch Days Mo-Fr Sch Hols Sat Sun
30 Mar 2014    SCN 36540 New clock change duty schedule.
Spec Sun
25 Oct 2014    SCN 38560 New duty schedules.
Mo-Fr Sch Days Mo-Fr Sch Hols Sat Sun
24 Nov 2014    SCN 38873 New Monday-Friday duty schedules.
Mo-Fr Sch Days
21 Mar 2015    SCN 39983 New duty schedules.
Mo-Fr Sat Sun Spec Sun
18 Apr 2015    SCN 40342 Temporary westbound diversion (Hounslow). Began 8 April.
Mo-Fr Sat Sun Spec Sun
31 Oct 2015    SCN 40343 End of temporary westbound diversion (Hounslow). Copy from Schedule 40342 (not Bx Ce).
Mo-Fr Sat Sun Box Chr Eve Spec Sun
27 Feb 2016    SCN 43217 Additional westbound stop on Eastern Perimeter Road (Northern Perimeter Road). Copy from Schedule 40343 (not Bx Ce).
Mo-Fr Sat Sun Box
Opt 1 ver 1
Opt 1 ver 2 		Chr Eve
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Opt 1 ver 2 		Spec Sun
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Opt 1 ver 3
03 Mar 2018    SCN 45088 New contract.
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Opt 1 ver 1
Opt 1 ver 2 		Chr Eve
Opt 1 ver 1
Opt 1 ver 2 		Spec Mo-Fr Spec Sun
Opt 1 ver 1
Opt 1 ver 2
21 Mar 2020    SCN 54486 Garage reallocation
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22 Aug 2020    SCN 56116 New duty schedules.
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12 Jun 2021    SCN 58723 Garage reallocation
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03 Jul 2021    SCN 59104 Temporary eastbound diversion (Colnbrook). Copy from Schedule 58723.
Mo-Fr Sat Sun
09 Oct 2021    SCN 59940 New duty schedules
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18 Dec 2021    SCN 59105 Old PDF Format. End of temporary eastbound diversion (Colnbrook). Copy from Schedule 59940.
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18 Dec 2021    SCN 59105 New PDF Format. End of temporary eastbound diversion (Colnbrook). Copy from Schedule 59940.
Mo-Fr Sat Sun
11 Nov 2023    SCN 64995 Temporary diversion. Copy from Schedule 59940.
Mo-Fr Sat Sun
27 Apr 2024    SCN 64999 End of temporary diversion (Heathrow).
Mo-Fr Sat Sun

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