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1L12 0723 Carmarthen to London Paddington
Departing on 18th December 2025

operated by
Great Western Railway
5 coaches
Carmarthen - Swansea
800036
10 coaches
Swansea - London Paddington
800036
800028
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
0724
-1
UU
Ferryside [FYS]
0734
0735
0734
0735
0733
0735
Bertwyn Level Crossing
pass
0738½
No report
Kidwelly [KWL]
1
0741
0741
0740½
0741½
0740
0741
Kidwelly Junction
pass
0742½
No report
Pembrey & Burry Port [PBY]
0748
0749
0747½
0749
0753
0754
+5
Llanelli [LLE]
2
0755
0756
0755
0756½
0759½
0800¼
+3
Llandeilo Jn
pass
0759
pass
0802½
+3
Duffryn West
pass
0759½
pass
0803
+3
Gowerton [GWN]
2
pass
0803
pass
0805¾
+2
Cockett West
1
pass
0804½
pass
0807½
+3
Swansea Loop West
pass
0808½
pass
0811
+2
UM
USL
Swansea Loop East
pass
0810½
pass
0813
+2
USL
USM
Swansea [SWA]
½
Pathed as Class 80x on diesel from here
joins with 5L12 from Swansea
Service reverses here, gains coaches here
3
0813
0823
0813
0823
0815½
0822½
USM
USM
Swansea Loop East
pass
0825
pass
0824¼
Landore Junction
pass
0826
pass
0825½
USM
UM
Llansamlet [LAS]
2
pass
0829
pass
0828½
Skewen [SKE]
2
pass
0830½
pass
0830½
Neath [NTH]
2
0834
0835
0833½
0835
0833
0835
Briton Ferry West Jn
pass
0837½
pass
0837½
Port Talbot Parkway [PTA]
2
0841
0842
0841
0842½
0841
0842
Port Talbot East
pass
0843½
No report
Margam Middle Jn
pass
0844½
pass
0843¼
-1
Margam East Jn
pass
0845½
pass
0844½
Margam Moors Jn.
pass
0846½
pass
0845¾
UM
Pyle [PYL]
2
pass
0848
pass
0847¼
Stormy
pass
0849½
pass
0849
At platform
Bridgend [BGN]
2
0854
0855
0853½
0855
0852¾
0854¾
UM
UM
Tremains
pass
0856
pass
0856¾
Pencoed Up Passenger Loop
pass
0858½
No report
Pencoed [PCD]
2
pass
0859
pass
0858¾
Llanharan [LLR]
1
pass
0901
pass
0900¾
Llantrisant [LTI]
pass
0902½
No report
Pontyclun [PYC]
1
2
pass
0903
pass
0903
Miskin
pass
0905
pass
0904¾
St Fagans L C
pass
0909½
pass
0908¾
Leckwith North Jn
pass
0912
pass
0911
UM
C
Cardiff West
pass
0914½
No report
Cardiff Central [CDF]
Pathed as Class 80x on electric from here
2
0915
0919
0915½
0919
0914
0918¾
C
B
Cardiff East
pass
0919½
pass
0920
Long Dyke Jn
pass
0921
pass
0921
B
UM
Moorland Road Junction
pass
0921½
pass
0921¾
Pengam Jn
pass
0922
pass
0922
Rumney River Bridge Jn
pass
0922
pass
0922¼
Marshfield
pass
0925
pass
0925
Ebbw Jn
pass
0927½
pass
0927½
UM
UM
Gaer Jn
pass
0928
pass
0928
UM
Newport (South Wales) [NWP]
1
4
0930
0933
0930
0933
0929¾
0932½
UM
UM
Maindee West Jn
pass
0935
pass
0934¼
Maindee East Jn
pass
0935½
pass
0934¾
ML
East Usk Jn.
pass
0936½
pass
0935¾
Llanwern West Jn
pass
0937½
pass
0936¾
Magor
pass
0941
pass
0939½
-1
Severn Tunnel Junction [STJ]
4
pass
0942½
pass
0942¼
UM
UT
Severn Tunnel West
pass
0943½
pass
0943
Severn Tunnel East
pass
0947
pass
0946½
Pilning [PIL]
1
1
pass
0948
pass
0947½
Patchway [PWY]
1
pass
0951½
pass
0950½
-1
Bristol Parkway [BPW]
3
0953
0956
0953
0956
0952¼
0955¼
UT
UB
Westerleigh Jn
pass
1000
pass
0959¼
Chipping Sodbury
pass
1001½
pass
1000¾
Badminton
pass
1003½
pass
1003
Hullavington
pass
1006½
pass
1005½
Little Somerford
pass
1009
pass
1008½
Wootton Bassett Jn
1
pass
1013
pass
1011¾
-1
UB
UM
Swindon [SWI]
2
1
1019
1022
1018½
1022½
1017½
1021¾
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
1026
Uffington (Oxfordshire)
1
pass
1031
pass
1029
-1
Challow
pass
1033½
pass
1030
-3
Wantage Road
1
pass
1035
pass
1032½
-2
Steventon
pass
1037½
pass
1033½
-3
Milton Junction
pass
1038
pass
1034½
-3
Foxhall Jn [XJF]
pass
1039
pass
1036
-3
Didcot West End
pass
1039½
No report
Didcot Parkway [DID]
2
pass
1039½
pass
1036¾
-2
Didcot East Jn
pass
1039½
pass
1037¼
-2
Moreton Cutting
pass
1040½
pass
1037½
-2
Cholsey [CHO]
2
pass
1041½
pass
1039
-2
Goring & Streatley [GOR]
1
2
pass
1043½
pass
1040¾
-2
ML
Pangbourne [PAN]
pass
1045½
pass
1042¾
-2
Tilehurst [TLH]
2
pass
1047½
pass
1043¾
-3
Tilehurst East Jn.
pass
1048
pass
1044
-3
Reading High Level Jn
pass
1049
pass
1045½
-3
ML
Reading Main Line West
pass
1049½
pass
1046½
-2
Reading [RDG]
10
1050
1056
1050½
1056
1047½
1056
UM
UM
Reading Main Line East
pass
1056½
pass
1056¾
Kennet Bridge Jn
pass
1057
pass
1057¼
Twyford West
pass
1059½
pass
1059¼
Twyford [TWY]
2
pass
1100
pass
1100¼
ML
Ruscombe
pass
1100½
pass
1100½
Maidenhead [MAI]
2
pass
1103½
pass
1103½
Maidenhead East
pass
1104
pass
1103½
Taplow [TAP]
2
pass
1104½
pass
1104¼
Burnham [BNM]
pass
1105
pass
1104½
Slough West
pass
1106
pass
1105¾
Slough [SLO]
3
pass
1106½
pass
1106¼
Dolphin Jn
pass
1107
pass
1106½
Langley [LNY]
2
pass
1107½
pass
1107¼
Iver [IVR]
2
pass
1108½
pass
1108
West Drayton Jcn
pass
1109
pass
1108¼
West Drayton [WDT]
2
pass
1109
pass
1108¾
West Drayton East
pass
1109
pass
1108¾
Stockley Junction
½
pass
1109½
pass
1109
ML
ML
Heathrow Airport Jn
pass
1110½
pass
1109½
Hayes & Harlington [HAY]
2
pass
1110½
pass
1110
Southall West Jn
pass
1111
pass
1110½
Southall [STL]
1
2
pass
1111½
pass
1110¾
ML
Southall East Jn
pass
1111½
pass
1111
Hanwell [HAN]
1
pass
1112½
pass
1112¼
West Ealing Junction
pass
1113
pass
1112½
West Ealing [WEA]
pass
1113
pass
1112¾
Ealing Broadway [EAL]
2
pass
1113½
pass
1113½
Acton West
1
pass
1114
pass
1113¾
ML
ML
Acton Main Line [AML]
2
pass
1115
pass
1114¼
Friars Jn
pass
1115½
No report
Old Oak Common West
pass
1116
pass
1115¼
Old Oak Common East
pass
1116½
pass
1116
Ladbroke Grove
pass
1117½
pass
1117
UM
3
Portobello Jn (London)
pass
1118
pass
1117¾
Royal Oak Junction
pass
1119
pass
1120
+1
3
2
London Paddington [PAD]
2
1120
1120
1122
+2
2
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