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1B15 1248 London Paddington to Swansea
Departing on 5th January 2026

operated by
Great Western Railway
10 coaches
800014
800036
GBTT
WTT
RTTRealtime
Route
Mi.Ch
Location
Pl
Arr
Dep
Arr
Dep
Arr
Dep
Dly
Path
Line
0.00
London Paddington [PAD]
Pathed as Class 80x on electric at 125mph
9
1248
1248
1247½
3
0.41
Royal Oak Junction
pass
1249
pass
1248½
3
2
1.28
Portobello Jn (London)
pass
1250½
pass
1249¾
1.68
Ladbroke Grove
pass
1251
pass
1250½
2
DM
2.55
Old Oak Common East
pass
1251½
pass
1251¼
3.15
Old Oak Common West
pass
1252
pass
1251¾
3.48
Friars Jn
pass
1252½
pass
1252
4.16
Acton Main Line [AML]
pass
1253
pass
1252½
4.75
Acton West
pass
1253½
pass
1253
ML
ML
5.51
Ealing Broadway [EAL]
1
pass
1254
pass
1253½
6.41
West Ealing [WEA]
pass
1254½
pass
1253¾
6.49
West Ealing Junction
pass
1254½
pass
1253¾
7.23
Hanwell [HAN]
pass
1254½
pass
1254¼
8.57
Southall East Jn
pass
1255½
pass
1255
9.01
Southall [STL]
1
pass
1255½
pass
1255½
9.65
Southall West Jn
pass
1256
pass
1255½
10.66
Hayes & Harlington [HAY]
1
pass
1256½
pass
1256¼
11.09
Heathrow Airport Jn
pass
1256½
pass
1256
ML
12.04
Stockley Junction
pass
1257
pass
1256½
12.62
West Drayton East
pass
1257½
pass
1257
13.12
West Drayton [WDT]
1
pass
1257½
pass
1257½
13.26
West Drayton Jcn
pass
1257½
pass
1257½
14.55
Iver [IVR]
1
pass
1258
pass
1258
16.13
Langley [LNY]
1
pass
1259
pass
1259¼
17.13
Dolphin Jn
pass
1259½
pass
1259¾
18.31
Slough [SLO]
2
pass
1300
pass
1300½
ML
19.06
Slough West
pass
1300½
pass
1301
20.72
Burnham [BNM]
pass
1301½
pass
1302
22.34
Taplow [TAP]
1
pass
1302
pass
1302¾
23.53
Maidenhead East
pass
1302½
pass
1303½
24.14
Maidenhead [MAI]
1
pass
1303
pass
1304
+1
29.40
Ruscombe
pass
1306
pass
1306
30.76
Twyford [TWY]
1
1
pass
1306½
pass
1306¾
ML
31.57
Twyford West
pass
1307
pass
1307¼
35.10
Kennet Bridge Jn
pass
1309½
pass
1309½
35.56
Reading Main Line East
pass
1310
pass
1310
35.75
Reading [RDG]
9
1311
1313
1311
1313
1311¼
1312¾
DM
DM
36.12
Reading Main Line West
pass
1313½
pass
1313½
36.45
Reading High Level Jn
pass
1314
pass
1314¼
ML
38.29
Tilehurst East Jn.
pass
1315
pass
1315¼
38.47
Tilehurst [TLH]
1
pass
1315
pass
1315¼
41.38
Pangbourne [PAN]
pass
1317
pass
1316¾
44.55
Goring & Streatley [GOR]
1
1
pass
1319
pass
1318½
ML
48.32
Cholsey [CHO]
1
pass
1321
pass
1320¼
51.32
Moreton Cutting
pass
1323
pass
1321½
-1
52.61
Didcot East Jn
pass
1324
pass
1322
-1
53.05
Didcot Parkway [DID]
1
pass
1324
pass
1322½
-1
53.20
Didcot West End
pass
1324
No report
53.50
Foxhall Jn [XJF]
pass
1324½
pass
1322¾
-1
55.14
Milton Junction
pass
1325
pass
1323¼
-1
56.27
Steventon
pass
1326
pass
1324
-1
60.17
Wantage Road
pass
1328
pass
1328
63.75
Challow
pass
1330
pass
1331
+1
66.34
Uffington (Oxfordshire)
1
pass
1331
pass
1332
+1
72.25
Bourton
pass
1334½
pass
1335
74.46
Swindon South Marston Jn
pass
1336
pass
1336¼
75.58
Swindon Stratton Green
pass
1336½
pass
1337
76.27
Highworth Jn
pass
1337
pass
1337¼
76.59
Swindon East Loop
pass
1337
pass
1338½
+1
77.18
Swindon [SWI]
4
1337
1340
1338
1340
1339¼
1340¾
DM
DM
78.31
Rushey Platt
pass
1341½
pass
1342¼
+1
82.67
Wootton Bassett Jn
pass
1344½
pass
1345½
+1
DM
DB
89.57
Little Somerford
pass
1348½
pass
1349½
+1
94.16
Hullavington
1 2
pass
1351
pass
1354½
+3
99.76
Badminton
pass
1355
pass
1357¼
+2
104.40
Chipping Sodbury
pass
1358½
pass
1400¼
+1
107.09
Westerleigh Jn
½
pass
1400½
pass
1402
+1
111.57
Bristol Parkway [BPW]
2
1403
1405
1404
1405½
1406¾
1408¼
+2
DB
DT
112.79
Patchway [PWY]
2
pass
1407
pass
1409¾
+2
116.45
Pilning [PIL]
2
pass
1409½
pass
1412¾
+3
118.03
Severn Tunnel East
pass
1410½
pass
1413¾
+3
122.31
Severn Tunnel West
pass
1414
pass
1417
+3
123.41
Severn Tunnel Junction [STJ]
3
pass
1415
pass
1418½
+3
DT
DM
125.66
Magor
pass
1416½
pass
1420
+3
130.72
Llanwern West Jn
pass
1420
pass
1423¾
+3
131.63
East Usk Jn.
pass
1420½
pass
1424¼
+3
132.55
Maindee East Jn
pass
1421½
pass
1425¼
+3
ML
132.77
Maindee West Jn
pass
1422
pass
1426¼
+4
133.31
Newport (South Wales) [NWP]
2
1423
1425
1423
1425
1427½
1428¾
+3
DM
DM
134.13
Gaer Jn
pass
1426½
pass
1430
+3
DM
134.68
Ebbw Jn
pass
1427½
pass
1431
+3
DM
DM
138.41
Marshfield
pass
1430
pass
1433½
+3
142.42
Rumney River Bridge Jn
pass
1433
pass
1436
+3
143.01
Pengam Jn
pass
1433
pass
1436½
+3
143.46
Moorland Road Junction
1
pass
1433½
pass
1437¼
+3
DM
DR
144.16
Long Dyke Jn
pass
1435
pass
1437¾
+2
E
144.79
Cardiff East
pass
1436½
pass
1439
+2
DR
E
145.11
Cardiff Central [CDF]
Pathed as Class 80x on diesel from here
4
1437
1439
1437½
1439½
1440
1442½
+3
E
D
145.37
Cardiff West
pass
1440½
No report
146.36
Leckwith North Jn
pass
1442½
pass
1445½
+3
D
DM
149.14
St Fagans L C
pass
1444½
pass
1448
+3
154.08
Miskin
pass
1448½
pass
1451¾
+3
156.21
Pontyclun [PYC]
1
pass
1450½
pass
1453¾
+3
156.57
Llantrisant [LTI]
pass
1451
No report
158.53
Llanharan [LLR]
2
pass
1452½
pass
1456
+3
161.41
Pencoed [PCD]
1
pass
1454½
pass
1457¾
+3
164.42
Tremains
pass
1457
pass
1459¾
+3
165.26
Bridgend [BGN]
1
1458
1459
1458
1459½
1501½
1503½
+4
DM
DM
169.46
Stormy
pass
1504
pass
1508½
+4
171.21
Pyle [PYL]
1
pass
1505
pass
1509¾
+4
173.45
Margam Moors Jn.
pass
1506½
pass
1510¾
+4
DM
175.12
Margam East Jn
pass
1507½
pass
1512¼
+4
176.00
Margam Middle Jn
pass
1508
pass
1512½
+4
176.70
Port Talbot East
pass
1509
No report
177.39
Port Talbot Parkway [PTA]
1
1510
1511
1510
1511½
1514½
1516
+4
179.38
Baglan [BAJ]
1
pass
1513½
pass
1518¾
+5
180.09
Briton Ferry East
pass
1514½
pass
1519
+4
181.20
Briton Ferry [BNF]
1
pass
1515½
pass
1520¼
+5
181.38
Court Sart Jn
pass
1515½
pass
1520¼
+4
183.00
Neath [NTH]
1
1
1517
1518
1517½
1519
1522
1523½
+4
185.06
Skewen [SKE]
1
pass
1522
pass
1526½
+4
186.68
Llansamlet [LAS]
1
pass
1524½
pass
1528½
+4
189.42
Landore Junction
pass
1527½
pass
1531½
+4
DM
DSM
190.23
Swansea Loop East
pass
1528½
pass
1533
+4
190.67
Swansea [SWA]
3
1530
1530
1535
+5
DSM
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