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1L12 0723 Carmarthen to London Paddington
Departing on 5th January 2026

operated by
Great Western Railway
5 coaches
Carmarthen - Swansea
800007
10 coaches
Swansea - London Paddington
800007
800030
GBTT
WTT
RTTRealtime
Route
Location
Pl
Arr
Dep
Arr
Dep
Arr
Dep
Dly
Path
Line
Carmarthen [CMN]
Pathed as Class 80x on diesel at 125mph
2
0723
0723
0723
U2
Carmarthen Jn [XCI]
pass
0725
pass
0725
UU
Ferryside [FYS]
0734
0735
0734
0735
0734
0735
Bertwyn Level Crossing
pass
0738½
No report
Kidwelly [KWL]
1
0741
0741
0740½
0741½
N/R
0742
Kidwelly Junction
pass
0742½
No report
Pembrey & Burry Port [PBY]
0748
0749
0747½
0749
0748
0751
+2
Llanelli [LLE]
2
0755
0756
0755
0756½
0757
0758½
+2
Llandeilo Jn
pass
0759
pass
0800¾
+1
Duffryn West
pass
0759½
pass
0801¼
+1
Gowerton [GWN]
2
pass
0803
pass
0803¾
+1
Cockett West
1
pass
0804½
pass
0805¾
+1
Swansea Loop West
pass
0808½
pass
0809½
+1
UM
USL
Swansea Loop East
pass
0810½
pass
0811¼
USL
USM
Swansea [SWA]
½
Pathed as Class 80x on diesel from here
joins with 5L12 from Swansea
Service reverses here, gains coaches here
2
0813
0823
0813
0823
0813¾
0824¾
+1
USM
USM
Swansea Loop East
pass
0825
pass
0826½
+1
Landore Junction
pass
0826
pass
0827½
+1
USM
UM
Llansamlet [LAS]
2
pass
0829
pass
0830½
+1
Skewen [SKE]
2
pass
0830½
pass
0832¾
+2
Neath [NTH]
2
0834
0835
0833½
0835
0835
0837
+2
Briton Ferry West Jn
pass
0837½
pass
0840
+2
Port Talbot Parkway [PTA]
2
0841
0842
0841
0842½
0843¾
0845
+2
Port Talbot East
pass
0843½
No report
Margam Middle Jn
pass
0844½
pass
0846½
+2
Margam East Jn
pass
0845½
pass
0848
+2
Margam Moors Jn.
pass
0846½
pass
0849¼
+2
UM
Pyle [PYL]
2
pass
0848
pass
0850¾
+2
Stormy
pass
0849½
pass
0852¾
+3
At platform
Bridgend [BGN]
2
0854
0855
0853½
0855
0856½
0857¾
+2
UM
UM
Tremains
pass
0856
pass
0900
+3
Pencoed Up Passenger Loop
pass
0858½
No report
Pencoed [PCD]
2
pass
0859
pass
0902¼
+3
Llanharan [LLR]
1
pass
0901
pass
0904
+3
Llantrisant [LTI]
pass
0902½
No report
Pontyclun [PYC]
1
2
pass
0903
pass
0906¼
+3
Miskin
pass
0905
pass
0908
+3
St Fagans L C
pass
0909½
pass
0912
+2
Leckwith North Jn
pass
0912
pass
0914¾
+2
UM
C
Cardiff West
pass
0914½
No report
Cardiff Central [CDF]
Pathed as Class 80x on electric from here
2
0915
0919
0915½
0919
0918¾
0921
+2
C
B
Cardiff East
pass
0919½
pass
0922
+2
Long Dyke Jn
pass
0921
pass
0923¼
+2
B
UM
Moorland Road Junction
pass
0921½
pass
0924
+2
Pengam Jn
pass
0922
pass
0924¼
+2
Rumney River Bridge Jn
pass
0922
pass
0924½
+2
Marshfield
pass
0925
pass
0927
+2
Ebbw Jn
pass
0927½
pass
0930
+2
UM
UM
Gaer Jn
pass
0928
pass
0930½
+2
UM
Newport (South Wales) [NWP]
1
3
0930
0933
0930
0933
0932¾
0934¼
+1
UM
UM
Maindee West Jn
pass
0935
pass
0935¾
Maindee East Jn
pass
0935½
pass
0936¼
ML
East Usk Jn.
pass
0936½
pass
0937
Llanwern West Jn
pass
0937½
pass
0938
Magor
pass
0941
pass
0941
Severn Tunnel Junction [STJ]
4
pass
0942½
pass
0943¾
+1
UM
UT
Severn Tunnel West
pass
0943½
pass
0944½
+1
Severn Tunnel East
pass
0947
pass
0948
+1
Pilning [PIL]
1
1
pass
0948
pass
0949¼
+1
Patchway [PWY]
1
pass
0951½
pass
0952
Bristol Parkway [BPW]
3
0953
0956
0953
0956
0954
0955½
UT
UB
Westerleigh Jn
pass
1000
pass
0959¾
Chipping Sodbury
pass
1001½
pass
1001¼
Badminton
pass
1003½
pass
1003½
Hullavington
pass
1006½
pass
1006
Little Somerford
pass
1009
pass
1009¼
Wootton Bassett Jn
1
pass
1013
pass
1012¾
UB
UM
Rushey Platt
pass
1017
pass
1016½
UM
UR
Swindon [SWI]
2
1
1019
1022
1018½
1022½
1019¼
1021½
UR
UM
Highworth Jn
pass
1023½
pass
1023¾
Swindon Stratton Green
pass
1024
pass
1024¼
Swindon South Marston Jn
pass
1025
pass
1024½
Bourton
pass
1026½
pass
1025¾
Uffington (Oxfordshire)
1
pass
1031
pass
1028¾
-2
Challow
pass
1033½
pass
1030¼
-3
UM
UR
Wantage Road
1
pass
1035
pass
1034¾
UR
UM
Steventon
pass
1037½
pass
1037½
Milton Junction
pass
1038
pass
1038½
Foxhall Jn [XJF]
pass
1039
pass
1039¼
Didcot West End
pass
1039½
No report
Didcot Parkway [DID]
2
pass
1039½
pass
1040¼
Didcot East Jn
pass
1039½
pass
1040¼
Moreton Cutting
pass
1040½
pass
1040½
Cholsey [CHO]
2
pass
1041½
pass
1042
Goring & Streatley [GOR]
1
2
pass
1043½
pass
1043¾
ML
Pangbourne [PAN]
pass
1045½
pass
1045¾
Tilehurst [TLH]
2
pass
1047½
pass
1046¾
Tilehurst East Jn.
pass
1048
pass
1047
Reading High Level Jn
pass
1049
pass
1048¼
ML
Reading Main Line West
pass
1049½
pass
1048¾
Reading [RDG]
10
1050
1056
1050½
1056
1049¾
1056¼
UM
UM
Reading Main Line East
pass
1056½
pass
1057
Kennet Bridge Jn
pass
1057
pass
1057½
Twyford West
pass
1059½
pass
1059½
Twyford [TWY]
2
pass
1100
pass
1100¼
ML
Ruscombe
pass
1100½
pass
1100½
Maidenhead [MAI]
2
pass
1103½
pass
1103¾
Maidenhead East
pass
1104
pass
1103¾
Taplow [TAP]
2
pass
1104½
pass
1104½
Burnham [BNM]
pass
1105
pass
1104¾
Slough West
pass
1106
pass
1105¾
Slough [SLO]
3
pass
1106½
pass
1106½
Dolphin Jn
pass
1107
pass
1107
Langley [LNY]
2
pass
1107½
pass
1108
Iver [IVR]
2
pass
1108½
pass
1108¾
West Drayton Jcn
pass
1109
pass
1109¼
West Drayton [WDT]
2
pass
1109
pass
1109½
West Drayton East
pass
1109
pass
1109½
Stockley Junction
½
pass
1109½
pass
1109¾
ML
ML
Heathrow Airport Jn
pass
1110½
pass
1110¾
Hayes & Harlington [HAY]
2
pass
1110½
pass
1111¼
Southall West Jn
pass
1111
pass
1112
+1
Southall [STL]
1
2
pass
1111½
pass
1112¼
ML
Southall East Jn
pass
1111½
pass
1112½
Hanwell [HAN]
1
pass
1112½
pass
1113½
+1
West Ealing Junction
pass
1113
pass
1114
+1
West Ealing [WEA]
pass
1113
pass
1114¼
+1
Ealing Broadway [EAL]
2
pass
1113½
pass
1115
+1
Acton West
1
pass
1114
pass
1115
+1
ML
ML
Acton Main Line [AML]
2
pass
1115
pass
1115¾
+1
Friars Jn
pass
1115½
No report
Old Oak Common West
pass
1116
pass
1116½
Old Oak Common East
pass
1116½
pass
1117
Ladbroke Grove
pass
1117½
pass
1118
UM
3
Portobello Jn (London)
pass
1118
pass
1118½
Royal Oak Junction
pass
1119
pass
1119¾
London Paddington [PAD]
4
1120
1120
1121¾
+1
3
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