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1L20 1127 Carmarthen to London Paddington
Departing on 8th December 2025

operated by
Great Western Railway
5 coaches
Carmarthen - Swansea
800004
10 coaches
Swansea - London Paddington
800004
800002
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
1127
1127
1128
+1
U2
Carmarthen Jn [XCI]
pass
1129
pass
1130
+1
UU
Ferryside [FYS]
pass
1137½
No report
Kidwelly [KWL]
pass
1141
No report
Kidwelly Junction
pass
1141½
No report
Pembrey & Burry Port [PBY]
1146
1147
1146
1147½
No report
Llanelli [LLE]
2
1154
1155
1153½
1155
1156
1158
+3
Llandeilo Jn
pass
1157½
pass
1200½
+3
Duffryn West
pass
1158
pass
1201
+3
Gowerton [GWN]
2
pass
1201½
pass
1203¾
+2
Cockett West
1
pass
1203
pass
1205¾
+2
Swansea Loop West
1½
pass
1207
pass
1209¾
+2
UM
USL
Swansea Loop East
pass
1210½
pass
1212¼
+1
USL
USM
Swansea [SWA]
Pathed as Class 80x on diesel from here
Service reverses here, gains coaches here
3
1213
1222
1213
1222
1215
1222½
USM
USM
Swansea Loop East
pass
1223½
pass
1224¼
Landore Junction
pass
1224½
pass
1226
+1
USM
UM
Llansamlet [LAS]
2
pass
1227½
pass
1229½
+2
Skewen [SKE]
2
pass
1229½
pass
1231½
+2
Neath [NTH]
2
1233
1234
1232½
1234
1234¼
1236¼
+2
Briton Ferry West Jn
pass
1236½
pass
1239
+2
Port Talbot Parkway [PTA]
2
1240
1241
1240
1241½
1242¾
1244¼
+2
Port Talbot East
pass
1242½
No report
Margam Middle Jn
pass
1243½
pass
1245¾
+2
Margam East Jn
pass
1244½
pass
1247¼
+2
Margam Moors Jn.
pass
1245½
pass
1248½
+3
UM
Pyle [PYL]
2
pass
1247
pass
1250
+2
Stormy
pass
1248½
pass
1252
+3
At platform
Bridgend [BGN]
2
1253
1254
1252½
1254
1255¾
1258
+4
UM
UM
Tremains
pass
1255
pass
1300¼
+5
Pencoed Up Passenger Loop
pass
1257½
No report
Pencoed [PCD]
2
pass
1258
pass
1302¼
+4
Llanharan [LLR]
1
pass
1300
pass
1304¼
+4
Llantrisant [LTI]
pass
1301½
No report
Pontyclun [PYC]
1
2
pass
1302
pass
1306½
+4
Miskin
pass
1304
pass
1308½
+4
St Fagans L C
pass
1308½
pass
1312½
+4
Leckwith North Jn
½
pass
1311
pass
1314¾
+3
UM
C
Cardiff West
pass
1313½
No report
Cardiff Central [CDF]
Pathed as Class 80x on electric from here
2
1314
1318
1315
1318
1318¼
1320¾
+2
C
B
Cardiff East
pass
1318½
pass
1322¼
+3
Long Dyke Jn
pass
1320
pass
1323½
+3
B
UM
Moorland Road Junction
pass
1320½
pass
1324¼
+4
Pengam Jn
pass
1321
pass
1324½
+3
Rumney River Bridge Jn
pass
1321
pass
1325
+3
Marshfield
pass
1324
pass
1327½
+3
Ebbw Jn
pass
1326½
pass
1330¼
+3
UM
UM
Gaer Jn
pass
1327½
pass
1330½
+3
UM
Newport (South Wales) [NWP]
3
1329
1331
1329
1331
1332¾
1334¼
+3
UM
UM
Maindee West Jn
pass
1332
pass
1336
+4
Maindee East Jn
pass
1332½
pass
1336½
+4
East Usk Jn.
pass
1333
pass
1337½
+4
Llanwern West Jn
½
pass
1334
pass
1338½
+4
Magor
pass
1338
pass
1341¼
+3
Severn Tunnel Junction [STJ]
4
pass
1340
pass
1344
+4
UM
UT
Severn Tunnel West
pass
1341
pass
1345
+4
Severn Tunnel East
½
pass
1344½
pass
1350¾
+6
UT
UGL
Pilning [PIL]
1
1
pass
1346
pass
1353½
+7
UGL
UT
Patchway [PWY]
1
pass
1349½
pass
1424½
+35
Bristol Parkway [BPW]
4
1352
1355
1352
1356
1427¼
1430½
+34
UT
UB
Westerleigh Jn
pass
1400
pass
1435½
+35
Chipping Sodbury
pass
1401½
pass
1437
+35
Badminton
pass
1403½
pass
1439½
+35
Hullavington
pass
1406½
pass
1442
+35
Little Somerford
pass
1409
pass
1445
+35
Wootton Bassett Jn
1
pass
1413
pass
1448¼
+35
UB
UM
Swindon [SWI]
1
1419
1420
1418½
1420½
1454¼
1456¼
+35
UR
UM
Highworth Jn
pass
1421½
pass
1458¼
+36
Swindon Stratton Green
pass
1422
pass
1458¾
+37
Swindon South Marston Jn
pass
1422½
pass
1459¼
+36
Bourton
pass
1423½
pass
1500½
+36
Uffington (Oxfordshire)
pass
1427
pass
1503½
+36
Challow
pass
1428½
pass
1504½
+36
Wantage Road
1
pass
1430
pass
1507
+37
Steventon
pass
1432½
pass
1508¼
+35
Milton Junction
pass
1433
pass
1509
+35
Foxhall Jn [XJF]
pass
1434
pass
1510
+35
Didcot West End
pass
1434½
No report
Didcot Parkway [DID]
2
pass
1434½
pass
1510¾
+36
Didcot East Jn
pass
1434½
pass
1510¾
+36
Moreton Cutting
pass
1435½
pass
1511
+35
Cholsey [CHO]
2
pass
1436½
pass
1512½
+35
Goring & Streatley [GOR]
1
2
pass
1438½
pass
1514¼
+35
ML
Pangbourne [PAN]
pass
1440½
pass
1516
+35
Tilehurst [TLH]
2
pass
1442½
pass
1517¼
+34
Tilehurst East Jn.
pass
1443
pass
1517¾
+34
Reading High Level Jn
½
pass
1444
pass
1519¼
+35
ML
Reading Main Line West
pass
1445
pass
1520
+35
Reading [RDG]
10
1445
1448
1446
1448
1520¾
1522¾
+34
UM
UM
Reading Main Line East
pass
1448½
pass
1523½
+34
Kennet Bridge Jn
pass
1449
pass
1524
+35
Twyford West
pass
1451½
pass
1526
+34
Twyford [TWY]
2
pass
1452
pass
1526¾
+34
ML
Ruscombe
pass
1452½
pass
1527
+34
Maidenhead [MAI]
2
pass
1455½
pass
1530
+34
Maidenhead East
pass
1456
pass
1530
+34
Taplow [TAP]
2
pass
1456½
pass
1530¾
+34
Burnham [BNM]
pass
1457
pass
1531
+34
Slough West
pass
1458
pass
1532¼
+34
Slough [SLO]
3
pass
1458½
pass
1533
+34
Dolphin Jn
pass
1459
pass
1533¼
+34
Langley [LNY]
2
pass
1459½
pass
1534
+34
Iver [IVR]
2
pass
1500½
pass
1534½
+34
West Drayton Jcn
pass
1501
pass
1535
+34
West Drayton [WDT]
2
pass
1501
pass
1535½
+34
West Drayton East
pass
1501
pass
1535½
+34
Stockley Junction
pass
1501½
pass
1535½
+34
ML
ML
Heathrow Airport Jn
pass
1502
pass
1536
+34
Hayes & Harlington [HAY]
2
pass
1502
pass
1536¼
+34
Southall West Jn
pass
1502½
pass
1536¾
+34
Southall [STL]
2
pass
1503
pass
1536½
+33
ML
Southall East Jn
pass
1503
pass
1536¾
+33
Hanwell [HAN]
1
pass
1503½
pass
1537¾
+34
West Ealing Junction
pass
1504
pass
1538¼
+34
West Ealing [WEA]
pass
1504
pass
1538½
+34
Ealing Broadway [EAL]
2
pass
1504
pass
1539
+34
Acton West
1
pass
1504½
pass
1539
+34
ML
ML
Acton Main Line [AML]
2
pass
1505½
pass
1539¾
+34
Friars Jn
pass
1506
No report
Old Oak Common West
pass
1506½
pass
1540¼
+33
Old Oak Common East
pass
1507
pass
1540¾
+33
Ladbroke Grove
pass
1508
pass
1541¾
+33
UM
3
Portobello Jn (London)
1½
pass
1508½
pass
1542½
+34
Royal Oak Junction
pass
1511
pass
1543½
+32
3
2
London Paddington [PAD]
3
1512
1512
1545¾
+33
2
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