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1B17 1338 London Paddington to Carmarthen
Departing on 1st January 2026

operated by
Great Western Railway
GBTT
WTT
Route
Location
Pl
Arr
Dep
Arr
Dep
Path
Line
London Paddington [PAD]
forms from 1L16 from Carmarthen
3
1338
1338
2
Royal Oak Junction
pass
1339
2
Portobello Jn (London)
pass
1340
2
Ladbroke Grove
pass
1341
2
ML
Acton West
pass
1343½
ML
ML
Southall [STL]
1
pass
1345½
ML
Heathrow Airport Jn
pass
1346½
ML
Stockley Junction
pass
1347½
ML
RL
Slough [SLO]
4
pass
1353
RL
Slough West
1
pass
1354
ML
Maidenhead [MAI]
1
pass
1359½
ML
Twyford [TWY]
1
1
pass
1403
ML
Kennet Bridge Jn
pass
1406
DML
Reading [RDG]
9
1410
1413
1407½
1413
ML
Reading High Level Jn
pass
1414
ML
Goring & Streatley [GOR]
1
pass
1419
ML
Didcot Parkway [DID]
1
pass
1424
Wantage Road
pass
1428
Challow
pass
1430
Uffington (Oxfordshire)
1
pass
1431
Swindon [SWI]
4
1437
1440
1438
1440
Wootton Bassett Jn
pass
1444½
Hullavington
1
pass
1451
Westerleigh Jn
pass
1458½
Bristol Parkway [BPW]
2
1502
1503
1501½
1503½
Patchway [PWY]
2
pass
1505
Pilning [PIL]
2
pass
1507½
Severn Tunnel East
pass
1508½
Severn Tunnel West
pass
1512
Severn Tunnel Junction [STJ]
3
pass
1513
ML
Llanwern West Jn
½
pass
1518
Maindee East Jn
pass
1520
ML
Maindee West Jn
pass
1520½
Newport (South Wales) [NWP]
2
1522
1523
1521½
1523½
DM
Gaer Jn
pass
1525
ML
Ebbw Jn
pass
1526
Marshfield
pass
1528½
Moorland Road Junction
1
pass
1532
RL
Long Dyke Jn
pass
1533½
E
Cardiff Central [CDF]
Pathed as Class 80x on diesel from here
4
1536
1538
1536
1538
D
Leckwith North Jn
pass
1541
Pontyclun [PYC]
pass
1549
Bridgend [BGN]
1
1557
1558
1556½
1558
Stormy
pass
1602½
Margam Moors Jn.
pass
1605
Margam East Jn
pass
1606
Port Talbot Parkway [PTA]
1
1609
1610
1608½
1610
Court Sart Jn
pass
1614
Neath [NTH]
1
1615
1616
1616
1617½
Swansea Loop East
pass
1627
Swansea [SWA]
Pathed as Class 80x on diesel from here
Service reverses here
3
1629
1637
1628½
1637
Swansea Loop East
pass
1638½
Swansea Loop West
pass
1640½
Gowerton [GWN]
pass
1646½
Llandeilo Jn
pass
1650
Llanelli [LLE]
DPL
1653
1654
1652½
1654
Pembrey & Burry Port [PBY]
1700
1701
1659½
1701
Kidwelly [KWL]
2
pass
1706½
Bertwyn Level Crossing
pass
1708
Ferryside [FYS]
1
pass
1710½
Carmarthen Jn [XCI]
pass
1719½
Carmarthen [CMN]
1
1721
1721
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