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1L20 1127 Carmarthen to London Paddington
Departing on 31st December 2025

operated by
Great Western Railway
5 coaches
Carmarthen - Swansea
800031
10 coaches
Swansea - London Paddington
800031
800033
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
1152¼
1154½
Llandeilo Jn
pass
1158
pass
1156½
-1
Duffryn West
pass
1158½
pass
1157
-1
Gowerton [GWN]
2
pass
1202
pass
1159½
-2
Cockett West
1
pass
1203½
pass
1201¼
-2
Swansea Loop West
1
pass
1207½
pass
1204½
-2
UM
USL
Swansea Loop East
pass
1210½
pass
1206½
-3
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
1208¾
1221½
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
1233¾
Briton Ferry West Jn
pass
1236½
pass
1236¼
Port Talbot Parkway [PTA]
2
1240
1241
1240
1241½
1240
1241¼
Port Talbot East
pass
1242½
No report
Margam Middle Jn
pass
1243½
pass
1242½
Margam East Jn
pass
1244½
pass
1243¾
Margam Moors Jn.
pass
1245½
pass
1245¼
UM
Pyle [PYL]
2
pass
1247
pass
1246½
Stormy
pass
1248½
pass
1248¼
At platform
Bridgend [BGN]
2
1253
1254
1252½
1254
1252
1254¼
UM
UM
Tremains
pass
1255
pass
1256¼
+1
Pencoed Up Passenger Loop
pass
1257½
No report
Pencoed [PCD]
2
pass
1258
pass
1258¼
Llanharan [LLR]
1
pass
1300
pass
1300¼
Llantrisant [LTI]
pass
1301½
No report
Pontyclun [PYC]
1
2
pass
1302
pass
1302¼
Miskin
pass
1304
pass
1304¼
St Fagans L C
pass
1308½
pass
1308¼
Leckwith North Jn
½
pass
1311
pass
1310¾
UM
C
Cardiff West
pass
1313½
No report
Cardiff Central [CDF]
Pathed as Class 80x on electric from here
2
1314
1318
1315
1318
1314
1317¾
C
B
Cardiff East
pass
1318½
pass
1319
Long Dyke Jn
pass
1320
pass
1320¼
B
UM
Moorland Road Junction
pass
1320½
pass
1321
Pengam Jn
pass
1321
pass
1321¼
Rumney River Bridge Jn
pass
1321
pass
1321¾
Marshfield
pass
1324
pass
1324¼
Ebbw Jn
pass
1326½
pass
1327
UM
UM
Gaer Jn
pass
1327
pass
1327½
UM
Newport (South Wales) [NWP]
3
1329
1331
1329
1331
1330
1332
+1
UM
UM
Maindee West Jn
pass
1332
pass
1333½
+1
Maindee East Jn
pass
1332½
pass
1334
+1
ML
East Usk Jn.
pass
1333½
pass
1335
+1
Llanwern West Jn
½
pass
1334½
pass
1336
+1
Magor
pass
1338½
pass
1338¾
Severn Tunnel Junction [STJ]
4
pass
1340
pass
1341½
+1
UM
UT
Severn Tunnel West
pass
1341
pass
1342¼
+1
Severn Tunnel East
½
pass
1344½
pass
1346
+1
Pilning [PIL]
1
1
pass
1346
pass
1346¾
Patchway [PWY]
1
pass
1349½
pass
1351
+1
Bristol Parkway [BPW]
4
1352
1355
1352
1356
1354¼
1356½
UT
UB
Westerleigh Jn
pass
1400
pass
1401½
+1
Chipping Sodbury
pass
1401½
pass
1403
+1
Badminton
pass
1403½
pass
1405¼
+1
Hullavington
pass
1406½
pass
1407¾
+1
Little Somerford
pass
1409
pass
1410¾
+1
Wootton Bassett Jn
1
pass
1413
pass
1414
+1
UB
UM
Rushey Platt
pass
1417
pass
1417¾
UM
UR
Swindon [SWI]
3
1419
1420
1418½
1420½
1419¾
1421¼
UR
UM
Highworth Jn
pass
1421½
pass
1423
+1
Swindon Stratton Green
pass
1422
pass
1423½
+1
Swindon South Marston Jn
pass
1422½
pass
1423¾
+1
Bourton
pass
1423½
pass
1425¼
+1
Uffington (Oxfordshire)
pass
1427
pass
1428¼
+1
Challow
pass
1428½
pass
1429¼
Wantage Road
1
pass
1430
pass
1431½
+1
Steventon
pass
1432½
pass
1433
Milton Junction
pass
1433
pass
1434
Foxhall Jn [XJF]
pass
1434
pass
1435
Didcot West End
pass
1434½
No report
Didcot Parkway [DID]
2
pass
1434½
pass
1435¾
+1
Didcot East Jn
pass
1434½
pass
1436
+1
Moreton Cutting
pass
1435½
pass
1436¼
+1
Cholsey [CHO]
2
pass
1436½
pass
1437¾
+1
Goring & Streatley [GOR]
1
2
pass
1438½
pass
1439¾
+1
ML
Pangbourne [PAN]
pass
1440½
pass
1441½
Tilehurst [TLH]
2
pass
1442½
pass
1442½
Tilehurst East Jn.
pass
1443
pass
1442¾
Reading High Level Jn
pass
1444
pass
1444¼
ML
Reading Main Line West
pass
1444½
pass
1445
Reading [RDG]
10
1445
1447
1445½
1447½
1445¾
1448
UM
UM
Reading Main Line East
pass
1448
pass
1448¾
Kennet Bridge Jn
pass
1448½
pass
1449½
+1
UM
UR
Twyford West
pass
1451½
pass
1452¾
+1
RL
Twyford [TWY]
4
pass
1452½
pass
1453½
+1
RL
Ruscombe
pass
1453
pass
1454½
+1
Maidenhead [MAI]
3
5
pass
1456
pass
1458¾
+2
UR
Maidenhead East
pass
1456½
pass
1459½
+3
Taplow [TAP]
4
pass
1458
pass
1500¾
+2
Burnham [BNM]
2
pass
1500
pass
1503¼
+3
Slough West
pass
1502
pass
1506¼
+4
Slough [SLO]
1 4½
5
pass
1503
pass
1507
+4
Dolphin Jn
pass
1505
pass
1508
+3
Langley [LNY]
4
pass
1506½
pass
1509
+2
Iver [IVR]
4
pass
1509
pass
1510½
+1
West Drayton Jcn
pass
1511½
pass
1512
West Drayton [WDT]
4
pass
1511½
pass
1512¼
West Drayton East
pass
1512½
pass
1512½
Stockley Junction
pass
1513½
pass
1513
UR
UM
Heathrow Airport Jn
pass
1514½
pass
1514
Hayes & Harlington [HAY]
2
pass
1515
pass
1514½
Southall West Jn
pass
1515½
pass
1515
Southall [STL]
2
pass
1516½
pass
1515
-1
ML
Southall East Jn
pass
1516½
pass
1515¼
-1
Hanwell [HAN]
1
pass
1517
pass
1516½
West Ealing Junction
pass
1517½
pass
1516¾
West Ealing [WEA]
pass
1517½
pass
1517
Ealing Broadway [EAL]
2
pass
1517½
pass
1517¾
Acton West
1
pass
1518
pass
1518
ML
ML
Acton Main Line [AML]
2
pass
1519
pass
1518¾
Friars Jn
pass
1519½
No report
Old Oak Common West
pass
1520
pass
1519¼
Old Oak Common East
pass
1520½
pass
1519¾
Ladbroke Grove
pass
1521½
pass
1520¾
UM
3
Portobello Jn (London)
pass
1522
pass
1521½
Royal Oak Junction
pass
1523
pass
1522¾
London Paddington [PAD]
5
1524
1524
1524¾
3
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