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1L20 1124 Carmarthen to London Paddington
Departing on 29th December 2025

operated by
Great Western Railway
5 coaches
Carmarthen - Swansea
800030
10 coaches
Swansea - London Paddington
800030
800009
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
1124
1124
1124
U2
Carmarthen Jn [XCI]
pass
1126
pass
1125
-1
UU
Ferryside [FYS]
pass
1134½
No report
Bertwyn Level Crossing
pass
1137
No report
Kidwelly [KWL]
1
pass
1138½
No report
Kidwelly Junction
pass
1139
No report
Pembrey & Burry Port [PBY]
1144
1145
1143½
1145
N/R
1144
-1
Llanelli [LLE]
2
1151
1152
1151
1152½
1149¾
1151½
Llandeilo Jn
pass
1155
pass
1153¾
-1
Duffryn West
pass
1155½
pass
1154¼
-1
Gowerton [GWN]
2
pass
1159
pass
1156¾
-1
Cockett West
pass
1200½
pass
1158½
-1
Swansea Loop West
pass
1203½
pass
1202¼
-1
UM
USL
Swansea Loop East
pass
1205½
pass
1204¼
-1
USL
USM
Swansea [SWA]
Pathed as Class 80x on diesel from here
joins with 1B07 from London Paddington
Service reverses here, gains coaches here
3
1210
1216
1208
1216
1206¾
1215½
USM
USM
Swansea Loop East
pass
1217½
pass
1217¼
Landore Junction
pass
1218½
pass
1218½
USM
UM
Llansamlet [LAS]
2
pass
1221½
pass
1221½
Skewen [SKE]
2
pass
1223½
pass
1223½
Neath [NTH]
2
1227
1228
1226½
1228
1226
1228
Briton Ferry West Jn
pass
1230½
pass
1230¾
Port Talbot Parkway [PTA]
2
1234
1235
1234
1235½
1234½
1236
Port Talbot East
pass
1236½
No report
Margam Middle Jn
pass
1237½
pass
1237½
Margam East Jn
pass
1238½
pass
1239
Margam Moors Jn.
pass
1239½
pass
1240¼
UM
Pyle [PYL]
2
pass
1241
pass
1241¾
Stormy
pass
1242½
pass
1243½
+1
At platform
Bridgend [BGN]
2
1247
1248
1246½
1248
1247½
1249¾
+1
UM
UM
Tremains
pass
1249
pass
1251¾
+2
Pencoed Up Passenger Loop
pass
1251½
No report
Pencoed [PCD]
2
pass
1252
pass
1254
+2
Llanharan [LLR]
1
pass
1254
pass
1256
+1
Llantrisant [LTI]
pass
1255½
No report
Pontyclun [PYC]
1
2
pass
1256
pass
1258¼
+2
Miskin
pass
1258½
pass
1300¼
+2
St Fagans L C
pass
1303½
pass
1304¼
Leckwith North Jn
pass
1306½
pass
1307¼
UM
LL
Leckwith Loop
pass
1307
pass
1307¾
Leckwith South Jn
pass
1307½
pass
1309
+1
LL
DT
Ninian Park [NNP]
1
pass
1307½
pass
1309½
+2
Penarth Curve North Jn
4
pass
1308½
pass
1309¾
+1
DT
DTC
Cardiff Radyr Branch Jn
pass
1313½
pass
1313
UR
Cardiff West
pass
1314
No report
Cardiff Central [CDF]
4
1315
1318
1316
1318
1315
1319¼
+1
D
Cardiff East
pass
1318½
pass
1320½
+1
D
B
Long Dyke Jn
pass
1320
pass
1321¾
+1
B
UM
Moorland Road Junction
pass
1320½
pass
1323
+2
Pengam Jn
pass
1321
pass
1323½
+2
Rumney River Bridge Jn
pass
1321½
pass
1323¾
+2
Marshfield
pass
1324½
pass
1326¾
+2
Ebbw Jn
pass
1327
pass
1329½
+2
UM
UM
Gaer Jn
pass
1327½
pass
1329¾
+2
UM
Newport (South Wales) [NWP]
Pathed as Class 80x on electric from here
3
1329
1331
1329½
1331½
1332¼
1334½
+3
UM
UM
Maindee West Jn
pass
1332½
pass
1336
+3
Maindee East Jn
pass
1333
pass
1336¼
+3
ML
East Usk Jn.
pass
1334
pass
1337¼
+3
Llanwern West Jn
pass
1335
pass
1338¼
+3
Magor
pass
1338½
pass
1341
+2
Severn Tunnel Junction [STJ]
4
pass
1340
pass
1343¾
+3
UM
UT
Severn Tunnel West
pass
1341
pass
1344½
+3
Severn Tunnel East
½
pass
1344½
pass
1348
+3
Pilning [PIL]
1
1
pass
1346
pass
1349¼
+3
Patchway [PWY]
1
pass
1349½
pass
1353½
+4
Bristol Parkway [BPW]
4
1352
1355
1352
1356
1358
1401¼
+5
UT
UB
Westerleigh Jn
pass
1400
pass
1406¼
+6
Chipping Sodbury
pass
1401½
pass
1407¾
+6
Badminton
pass
1403½
pass
1410
+6
Hullavington
pass
1406½
pass
1412½
+6
Little Somerford
pass
1409
pass
1415½
+6
Wootton Bassett Jn
1
pass
1413
pass
1418¾
+5
UB
UM
Rushey Platt
pass
1417
pass
1422¼
+5
UM
UR
Swindon [SWI]
3
1419
1420
1418½
1420½
1424¼
1426¼
+5
UR
UM
Highworth Jn
pass
1421½
pass
1428¼
+6
Swindon Stratton Green
pass
1422
pass
1428¾
+6
Swindon South Marston Jn
pass
1422½
pass
1429
+6
Bourton
pass
1423½
pass
1430½
+6
Uffington (Oxfordshire)
pass
1427
pass
1433¼
+6
Challow
pass
1428½
pass
1434¼
+5
Wantage Road
1
pass
1430
pass
1436¾
+6
Steventon
pass
1432½
pass
1438
+5
Milton Junction
pass
1433
pass
1439¼
+6
Foxhall Jn [XJF]
pass
1434
pass
1441
+6
Didcot West End
pass
1434½
No report
Didcot Parkway [DID]
2
pass
1434½
pass
1442
+7
Didcot East Jn
pass
1434½
pass
1442¼
+7
Moreton Cutting
pass
1435½
pass
1442¾
+7
Cholsey [CHO]
2
pass
1436½
pass
1444¼
+7
Goring & Streatley [GOR]
1
2
pass
1438½
pass
1446
+7
ML
Pangbourne [PAN]
pass
1440½
pass
1448
+7
Tilehurst [TLH]
2
pass
1442½
pass
1449
+6
Tilehurst East Jn.
pass
1443
pass
1449½
+6
Reading High Level Jn
pass
1444
pass
1451
+7
ML
Reading Main Line West
pass
1444½
pass
1451¾
+7
Reading [RDG]
10
1445
1448
1445½
1448
1452½
1455¼
+7
UM
UM
Reading Main Line East
pass
1448½
pass
1456
+7
Kennet Bridge Jn
pass
1449
pass
1456¾
+7
Twyford West
pass
1451½
pass
1458¾
+7
Twyford [TWY]
2
pass
1452
pass
1459½
+7
ML
Ruscombe
pass
1452½
pass
1459¾
+7
Maidenhead [MAI]
2
pass
1455½
pass
1502¾
+7
Maidenhead East
pass
1456
pass
1502¾
+7
Taplow [TAP]
2
pass
1456½
pass
1503½
+7
Burnham [BNM]
pass
1457
pass
1504¼
+7
Slough West
pass
1458
pass
1507¾
+9
Slough [SLO]
2
3
pass
1458½
pass
1509½
+11
Dolphin Jn
pass
1459½
pass
1511½
+12
Langley [LNY]
2
pass
1500½
pass
1513½
+13
Iver [IVR]
2
pass
1501½
pass
1516
+14
West Drayton Jcn
pass
1502½
pass
1518½
+16
West Drayton [WDT]
2
pass
1502½
pass
1519½
+16
West Drayton East
pass
1503
pass
1520
+17
Stockley Junction
pass
1503½
pass
1520¾
+17
ML
ML
Heathrow Airport Jn
½
pass
1504
pass
1522¾
+18
Hayes & Harlington [HAY]
2
pass
1504
pass
1523¾
+19
Southall West Jn
pass
1505
pass
1526
+21
Southall [STL]
½
2
pass
1505½
pass
1527½
+22
ML
Southall East Jn
pass
1505½
pass
1528
+22
Hanwell [HAN]
1
pass
1506½
pass
1529¼
+22
West Ealing Junction
pass
1506½
pass
1529½
+23
West Ealing [WEA]
pass
1506½
pass
1529¾
+23
Ealing Broadway [EAL]
2
pass
1507
pass
1530½
+23
Acton West
1
pass
1507½
pass
1530¾
+23
ML
ML
Acton Main Line [AML]
2
pass
1508½
pass
1531¼
+23
Friars Jn
pass
1509
No report
Old Oak Common West
pass
1509½
pass
1532
+22
Old Oak Common East
pass
1510
pass
1532½
+22
Ladbroke Grove
pass
1511
pass
1533½
+22
UM
3
Portobello Jn (London)
½
pass
1511½
pass
1534
+22
Royal Oak Junction
pass
1513
pass
1535
+22
London Paddington [PAD]
4
1514
1514
1537
+23
3
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