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1L20 1127 Carmarthen to London Paddington
Departing on 17th December 2025

operated by
Great Western Railway
5 coaches
Carmarthen - Swansea
800007
10 coaches
Swansea - London Paddington
800007
800004
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
1126
-1
U2
Carmarthen Jn [XCI]
pass
1129
pass
1128
-1
UU
Ferryside [FYS]
pass
1137½
No report
Bertwyn Level Crossing
pass
1140
No report
Kidwelly [KWL]
1
pass
1141½
No report
Kidwelly Junction
pass
1142
No report
Pembrey & Burry Port [PBY]
1147
1148
1146½
1148
1146
1147
-1
Llanelli [LLE]
2
1154
1155
1154
1155½
1153
1154½
Llandeilo Jn
pass
1158
pass
1157¼
Duffryn West
pass
1158½
pass
1157½
Gowerton [GWN]
2
pass
1202
pass
1200¼
-1
Cockett West
1
pass
1203½
pass
1202
-1
Swansea Loop West
1
pass
1207½
pass
1205½
-1
UM
USL
Swansea Loop East
pass
1210½
pass
1209
-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
1213
1222
1213
1222
1211½
1221¼
USM
USM
Swansea Loop East
pass
1223½
pass
1223¼
Landore Junction
pass
1224½
pass
1224¼
USM
UM
Llansamlet [LAS]
2
pass
1227½
pass
1227¼
Skewen [SKE]
2
pass
1229½
pass
1229¼
Neath [NTH]
2
1233
1234
1232½
1234
1231¾
1234
Briton Ferry West Jn
pass
1236½
pass
1236½
Port Talbot Parkway [PTA]
2
1240
1241
1240
1241½
1240¼
1241¼
Port Talbot East
pass
1242½
No report
Margam Middle Jn
pass
1243½
pass
1242¾
Margam East Jn
pass
1244½
pass
1244
Margam Moors Jn.
pass
1245½
pass
1245½
UM
Pyle [PYL]
2
pass
1247
pass
1246¾
Stormy
pass
1248½
pass
1248¾
At platform
Bridgend [BGN]
2
1253
1254
1252½
1254
1252½
1253¾
UM
UM
Tremains
pass
1255
pass
1255¾
Pencoed Up Passenger Loop
pass
1257½
No report
Pencoed [PCD]
2
pass
1258
pass
1257¾
Llanharan [LLR]
1
pass
1300
pass
1259¾
Llantrisant [LTI]
pass
1301½
No report
Pontyclun [PYC]
1
2
pass
1302
pass
1303½
+1
Miskin
pass
1304
pass
1306½
+2
St Fagans L C
pass
1308½
pass
1310¾
+2
Leckwith North Jn
½
pass
1311
pass
1313
+2
UM
C
Cardiff West
pass
1313½
No report
Cardiff Central [CDF]
Pathed as Class 80x on electric from here
2
1314
1318
1315
1318
1316
1318¼
C
B
Cardiff East
pass
1318½
pass
1319½
Long Dyke Jn
pass
1320
pass
1320½
B
UM
Moorland Road Junction
pass
1320½
pass
1321¼
Pengam Jn
pass
1321
pass
1321½
Rumney River Bridge Jn
pass
1321
pass
1322
Marshfield
pass
1324
pass
1324½
Ebbw Jn
pass
1326½
pass
1327
UM
UM
Gaer Jn
pass
1327
pass
1327½
UM
Newport (South Wales) [NWP]
3
1329
1331
1329
1331
1329½
1330¾
UM
UM
Maindee West Jn
pass
1332
pass
1332¼
Maindee East Jn
pass
1332½
pass
1332¾
ML
East Usk Jn.
pass
1333½
pass
1333¾
Llanwern West Jn
½
pass
1334½
pass
1334½
Magor
pass
1338½
pass
1337½
Severn Tunnel Junction [STJ]
4
pass
1340
pass
1340
UM
UT
Severn Tunnel West
pass
1341
pass
1340¾
Severn Tunnel East
½
pass
1344½
pass
1344¼
Pilning [PIL]
1
1
pass
1346
pass
1345½
Patchway [PWY]
1
pass
1349½
pass
1349¼
Bristol Parkway [BPW]
4
1352
1355
1352
1356
1352¾
1354¾
-1
UT
UB
Westerleigh Jn
pass
1400
pass
1359½
Chipping Sodbury
pass
1401½
pass
1401
Badminton
pass
1403½
pass
1403¼
Hullavington
pass
1406½
pass
1405¾
Little Somerford
pass
1409
pass
1408¾
Wootton Bassett Jn
1
pass
1413
pass
1412
UB
UM
Swindon [SWI]
1
1419
1420
1418½
1420½
1417¾
1419¾
UR
UM
Highworth Jn
pass
1421½
pass
1421¾
Swindon Stratton Green
pass
1422
pass
1422¼
Swindon South Marston Jn
pass
1422½
pass
1422½
Bourton
pass
1423½
pass
1424
Uffington (Oxfordshire)
pass
1427
pass
1427
Challow
pass
1428½
pass
1428
Wantage Road
1
pass
1430
pass
1430¼
Steventon
pass
1432½
pass
1431½
Milton Junction
pass
1433
pass
1432½
Foxhall Jn [XJF]
pass
1434
pass
1434
Didcot West End
pass
1434½
No report
Didcot Parkway [DID]
2
pass
1434½
pass
1435¼
Didcot East Jn
pass
1434½
pass
1435¾
+1
Moreton Cutting
pass
1435½
pass
1436¼
+1
Cholsey [CHO]
2
pass
1436½
pass
1438
+1
Goring & Streatley [GOR]
1
2
pass
1438½
pass
1439¾
+1
ML
Pangbourne [PAN]
pass
1440½
pass
1441½
+1
Tilehurst [TLH]
2
pass
1442½
pass
1442¾
Tilehurst East Jn.
pass
1443
pass
1443
Reading High Level Jn
pass
1444
pass
1444½
ML
Reading Main Line West
pass
1444½
pass
1445
Reading [RDG]
10
1445
1448
1445½
1448
1445¾
1447¾
UM
UM
Reading Main Line East
pass
1448½
pass
1448¼
Kennet Bridge Jn
pass
1449
pass
1449
Twyford West
pass
1451½
pass
1451¼
Twyford [TWY]
2
pass
1452
pass
1452¼
ML
Ruscombe
pass
1452½
pass
1452½
Maidenhead [MAI]
2
pass
1455½
pass
1455¾
Maidenhead East
pass
1456
pass
1455½
Taplow [TAP]
2
pass
1456½
pass
1456¼
Burnham [BNM]
pass
1457
pass
1456½
Slough West
pass
1458
pass
1510¼
+12
Slough [SLO]
3
pass
1458½
pass
1511½
+13
Dolphin Jn
pass
1459
pass
1513¼
+14
Langley [LNY]
2
pass
1459½
pass
1514½
+15
Iver [IVR]
2
pass
1500½
pass
1515¼
+15
West Drayton Jcn
pass
1501
pass
1515¾
+15
West Drayton [WDT]
2
pass
1501
pass
1516¼
+15
West Drayton East
pass
1501
pass
1516¼
+15
Stockley Junction
pass
1501½
pass
1516½
+15
ML
ML
Heathrow Airport Jn
pass
1502
pass
1516¾
+14
Hayes & Harlington [HAY]
2
pass
1502
pass
1517¼
+15
Southall West Jn
pass
1502½
pass
1517½
+15
Southall [STL]
2
pass
1503
pass
1517½
+14
ML
Southall East Jn
pass
1503
pass
1517¾
+14
Hanwell [HAN]
1
pass
1503½
pass
1518¾
+15
West Ealing Junction
pass
1504
pass
1519
+15
West Ealing [WEA]
pass
1504
pass
1519¼
+15
Ealing Broadway [EAL]
2
pass
1504
pass
1520
+15
Acton West
1
pass
1504½
pass
1520
+15
ML
ML
Acton Main Line [AML]
2
pass
1505½
pass
1520¾
+15
Friars Jn
pass
1506
No report
Old Oak Common West
pass
1506½
pass
1521¼
+14
Old Oak Common East
pass
1507
pass
1521½
+14
Ladbroke Grove
pass
1508
pass
1522½
+14
UM
3
Portobello Jn (London)
1½
pass
1508½
pass
1523
+14
Royal Oak Junction
pass
1511
pass
1524¼
+13
London Paddington [PAD]
8
1512
1512
1526
+14
3
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