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1B15 1248 London Paddington to Swansea
Departing on 6th January 2026

operated by
Great Western Railway
10 coaches
800036
800016
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
1330¼
+42
3
0.41
Royal Oak Junction
pass
1249
pass
1331½
+42
3
2
1.28
Portobello Jn (London)
pass
1250½
pass
1333
+42
1.68
Ladbroke Grove
pass
1251
pass
1333½
+42
2
DM
2.55
Old Oak Common East
pass
1251½
pass
1334½
+43
3.15
Old Oak Common West
pass
1252
pass
1335
+43
3.48
Friars Jn
pass
1252½
pass
1335¼
+43
4.16
Acton Main Line [AML]
pass
1253
pass
1336
+43
4.75
Acton West
pass
1253½
pass
1336½
+43
ML
ML
5.51
Ealing Broadway [EAL]
1
pass
1254
pass
1337¼
+43
6.41
West Ealing [WEA]
pass
1254½
pass
1339¼
+45
6.49
West Ealing Junction
pass
1254½
pass
1339¼
+45
7.23
Hanwell [HAN]
pass
1254½
pass
1341
+46
8.57
Southall East Jn
pass
1255½
pass
1343
+47
9.01
Southall [STL]
1
pass
1255½
pass
1343¾
+48
9.65
Southall West Jn
pass
1256
pass
1343¾
+48
10.66
Hayes & Harlington [HAY]
1
pass
1256½
pass
1344¾
+48
11.09
Heathrow Airport Jn
pass
1256½
pass
1344¾
+48
ML
12.04
Stockley Junction
pass
1257
pass
1345¼
+48
12.62
West Drayton East
pass
1257½
pass
1345¾
+48
13.12
West Drayton [WDT]
1
pass
1257½
pass
1346¼
+48
13.26
West Drayton Jcn
pass
1257½
pass
1346¼
+48
14.55
Iver [IVR]
1
pass
1258
pass
1346¾
+48
16.13
Langley [LNY]
1
pass
1259
pass
1348
+49
17.13
Dolphin Jn
pass
1259½
pass
1349¼
+49
18.31
Slough [SLO]
2
pass
1300
pass
1350¾
+50
ML
19.06
Slough West
pass
1300½
pass
1351¼
+50
20.72
Burnham [BNM]
pass
1301½
pass
1352½
+51
22.34
Taplow [TAP]
1
pass
1302
pass
1353¼
+51
23.53
Maidenhead East
pass
1302½
pass
1354¼
+51
24.14
Maidenhead [MAI]
1
pass
1303
pass
1354½
+51
29.40
Ruscombe
pass
1306
pass
1357
+51
30.76
Twyford [TWY]
1
1
pass
1306½
pass
1358
+51
ML
31.57
Twyford West
pass
1307
pass
1358¼
+51
35.10
Kennet Bridge Jn
pass
1309½
pass
1402¼
+52
35.56
Reading Main Line East
pass
1310
pass
1403
+52
35.75
Reading [RDG]
8
1311
1313
1311
1313
1404¼
1406¾
+53
DM
DM
36.12
Reading Main Line West
pass
1313½
pass
1407½
+53
36.45
Reading High Level Jn
pass
1314
pass
1408½
+54
ML
38.29
Tilehurst East Jn.
pass
1315
pass
1409½
+54
38.47
Tilehurst [TLH]
1
pass
1315
pass
1409½
+54
41.38
Pangbourne [PAN]
pass
1317
pass
1411
+53
44.55
Goring & Streatley [GOR]
1
1
pass
1319
pass
1412¾
+53
ML
48.32
Cholsey [CHO]
1
pass
1321
pass
1414½
+53
51.32
Moreton Cutting
pass
1323
pass
1415¾
+52
52.61
Didcot East Jn
pass
1324
pass
1416¼
+52
53.05
Didcot Parkway [DID]
1
pass
1324
pass
1416¾
+52
53.20
Didcot West End
pass
1324
No report
53.50
Foxhall Jn [XJF]
pass
1324½
pass
1417
+52
55.14
Milton Junction
pass
1325
pass
1417½
+52
56.27
Steventon
pass
1326
pass
1418¼
+52
60.17
Wantage Road
pass
1328
pass
1422
+54
63.75
Challow
pass
1330
pass
1425
+55
66.34
Uffington (Oxfordshire)
1
pass
1331
pass
1426¼
+55
72.25
Bourton
pass
1334½
pass
1429
+54
74.46
Swindon South Marston Jn
pass
1336
pass
1430¾
+54
75.58
Swindon Stratton Green
pass
1336½
pass
1432
+55
76.27
Highworth Jn
pass
1337
pass
1432½
+55
76.59
Swindon East Loop
pass
1337
pass
1433¾
+56
77.18
Swindon [SWI]
4
1337
1340
1338
1340
1435¾
1437¼
+57
DM
DM
78.31
Rushey Platt
pass
1341½
pass
1440¼
+59
82.67
Wootton Bassett Jn
pass
1344½
pass
1446¼
+61
DM
DB
89.57
Little Somerford
pass
1348½
pass
1450¼
+62
94.16
Hullavington
1 2
pass
1351
pass
1453
+62
99.76
Badminton
pass
1355
pass
1501
+65
104.40
Chipping Sodbury
pass
1358½
pass
1508
+69
107.09
Westerleigh Jn
½
pass
1400½
pass
1509¾
+69
111.57
Bristol Parkway [BPW]
2
1403
1405
1404
1405½
1514¾
1517¾
+72
DB
DT
112.79
Patchway [PWY]
2
pass
1407
pass
1519¾
+72
116.45
Pilning [PIL]
2
pass
1409½
pass
1522¾
+73
118.03
Severn Tunnel East
pass
1410½
pass
1524¾
+74
122.31
Severn Tunnel West
pass
1414
pass
1528½
+74
123.41
Severn Tunnel Junction [STJ]
3
pass
1415
pass
1530
+75
DT
DM
125.66
Magor
pass
1416½
pass
1531½
+75
130.72
Llanwern West Jn
pass
1420
pass
1535¼
+75
131.63
East Usk Jn.
pass
1420½
pass
1536
+75
132.55
Maindee East Jn
pass
1421½
pass
1537
+75
ML
132.77
Maindee West Jn
pass
1422
pass
1538
+76
133.31
Newport (South Wales) [NWP]
2
1423
1425
1423
1425
1540¾
1542¾
+77
DM
DM
134.13
Gaer Jn
pass
1426½
pass
1544¾
+78
DM
134.68
Ebbw Jn
pass
1427½
pass
1545¾
+78
DM
DM
138.41
Marshfield
pass
1430
pass
1549
+79
142.42
Rumney River Bridge Jn
pass
1433
pass
1551½
+78
143.01
Pengam Jn
pass
1433
pass
1552
+78
143.46
Moorland Road Junction
1
pass
1433½
pass
1552¾
+79
DM
DR
144.16
Long Dyke Jn
pass
1435
pass
1554
+79
E
144.79
Cardiff East
pass
1436½
pass
1555¼
+78
DR
E
145.11
Cardiff Central [CDF]
Pathed as Class 80x on diesel from here
4
1437
1439
1437½
1439½
1556¼
1559¼
+79
E
D
145.37
Cardiff West
pass
1440½
No report
146.36
Leckwith North Jn
pass
1442½
pass
1602½
+80
D
DM
149.14
St Fagans L C
pass
1444½
pass
1605
+80
154.08
Miskin
pass
1448½
pass
1609
+80
156.21
Pontyclun [PYC]
1
pass
1450½
pass
1611
+80
156.57
Llantrisant [LTI]
pass
1451
No report
158.53
Llanharan [LLR]
2
pass
1452½
pass
1613
+80
161.41
Pencoed [PCD]
1
pass
1454½
pass
1615¼
+80
164.42
Tremains
pass
1457
pass
1617¼
+80
165.26
Bridgend [BGN]
1
1458
1459
1458
1459½
1619
1620½
+81
DM
DM
169.46
Stormy
pass
1504
pass
1626
+82
171.21
Pyle [PYL]
1
pass
1505
pass
1627¼
+82
173.45
Margam Moors Jn.
pass
1506½
pass
1628½
+82
DM
175.12
Margam East Jn
pass
1507½
pass
1629¾
+82
176.00
Margam Middle Jn
pass
1508
pass
1630
+81
176.70
Port Talbot East
pass
1509
No report
177.39
Port Talbot Parkway [PTA]
1
1510
1511
1510
1511½
1632
1634¼
+82
179.38
Baglan [BAJ]
1
pass
1513½
pass
1637½
+83
180.09
Briton Ferry East
pass
1514½
pass
1637¾
+83
181.20
Briton Ferry [BNF]
1
pass
1515½
pass
1639
+83
181.38
Court Sart Jn
pass
1515½
pass
1639
+83
183.00
Neath [NTH]
1
1
1517
1518
1517½
1519
1640¾
1642¼
+83
185.06
Skewen [SKE]
1
pass
1522
pass
1645¾
+83
186.68
Llansamlet [LAS]
1
pass
1524½
pass
1647¾
+83
189.42
Landore Junction
pass
1527½
pass
1650¾
+83
DM
DSM
190.23
Swansea Loop East
pass
1528½
pass
1652¼
+83
190.67
Swansea [SWA]
4
1530
1530
1654¾
+84
DSM
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