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1B51 1545 London Paddington to Swansea
Departing on 4th January 2026

operated by
Great Western Railway
10 coaches
800028
800025
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
3
1545
1545
1545
2
0.41
Royal Oak Junction
pass
1546
pass
1546
1.28
Portobello Jn (London)
pass
1547½
pass
1547¼
1.68
Ladbroke Grove
pass
1548
pass
1548
2
DM
2.55
Old Oak Common East
pass
1548½
pass
1548¾
3.15
Old Oak Common West
pass
1549
pass
1549¼
3.48
Friars Jn
pass
1549½
pass
1549½
4.16
Acton Main Line [AML]
pass
1550
pass
1550¼
4.75
Acton West
pass
1550½
pass
1550¾
ML
ML
5.51
Ealing Broadway [EAL]
1
pass
1551
pass
1551
6.41
West Ealing [WEA]
pass
1551½
pass
1551½
6.49
West Ealing Junction
pass
1551½
pass
1551½
7.23
Hanwell [HAN]
pass
1551½
pass
1551¾
8.57
Southall East Jn
pass
1552½
pass
1552½
9.01
Southall [STL]
1
pass
1552½
pass
1553
9.65
Southall West Jn
pass
1553
pass
1553
10.66
Hayes & Harlington [HAY]
1
pass
1553½
pass
1554
11.09
Heathrow Airport Jn
pass
1553½
pass
1553¾
ML
12.04
Stockley Junction
pass
1554
pass
1554¼
12.62
West Drayton East
pass
1554½
pass
1554½
13.12
West Drayton [WDT]
1
pass
1554½
pass
1555
13.26
West Drayton Jcn
pass
1554½
pass
1555¼
14.55
Iver [IVR]
1
pass
1555
pass
1555¾
16.13
Langley [LNY]
1
pass
1556
pass
1556¾
17.13
Dolphin Jn
pass
1556½
pass
1557¼
18.31
Slough [SLO]
2
pass
1557
pass
1558
+1
ML
19.06
Slough West
pass
1557½
pass
1558½
+1
20.72
Burnham [BNM]
pass
1558½
pass
1559½
+1
22.34
Taplow [TAP]
1
pass
1559
pass
1600¼
+1
23.53
Maidenhead East
pass
1559½
pass
1601¼
+1
24.14
Maidenhead [MAI]
1
pass
1600
pass
1601½
+1
29.40
Ruscombe
pass
1603
pass
1603¾
+1
30.76
Twyford [TWY]
1
1
pass
1603½
pass
1604½
+1
ML
31.57
Twyford West
pass
1604
pass
1605
+1
35.10
Kennet Bridge Jn
pass
1606½
pass
1607¼
35.56
Reading Main Line East
pass
1607
pass
1607¾
35.75
Reading [RDG]
9
1608
1610
1608
1610
1609
1611
+1
DM
DM
36.12
Reading Main Line West
pass
1610½
pass
1611½
+1
36.45
Reading High Level Jn
pass
1611
pass
1612½
+1
ML
38.29
Tilehurst East Jn.
pass
1612
pass
1613½
+1
38.47
Tilehurst [TLH]
1
pass
1612
pass
1613½
+1
41.38
Pangbourne [PAN]
pass
1614
pass
1614¾
44.55
Goring & Streatley [GOR]
1
1
pass
1616
pass
1616¾
ML
48.32
Cholsey [CHO]
1
pass
1618
pass
1618¼
51.32
Moreton Cutting
pass
1620
pass
1619¾
52.61
Didcot East Jn
pass
1621
pass
1620¼
53.05
Didcot Parkway [DID]
1
pass
1621
pass
1620¾
53.20
Didcot West End
pass
1621
No report
53.50
Foxhall Jn [XJF]
pass
1621½
pass
1621
55.14
Milton Junction
pass
1622
pass
1621¼
56.27
Steventon
pass
1623
pass
1622¼
60.17
Wantage Road
pass
1625
pass
1625¾
63.75
Challow
pass
1627
pass
1628¾
+1
66.34
Uffington (Oxfordshire)
1
pass
1628
pass
1630
+2
72.25
Bourton
pass
1631½
pass
1632¾
+1
74.46
Swindon South Marston Jn
pass
1633
pass
1634
+1
75.58
Swindon Stratton Green
pass
1633½
pass
1635
+1
76.27
Highworth Jn
pass
1634
pass
1635¼
+1
76.59
Swindon East Loop
pass
1634
pass
1636¼
+2
77.18
Swindon [SWI]
4
1635
1638
1635
1638
1637¼
1638¾
DM
DM
78.31
Rushey Platt
pass
1639½
pass
1640¼
+1
82.67
Wootton Bassett Jn
pass
1642½
pass
1643¼
DM
DB
89.57
Little Somerford
pass
1646½
pass
1647½
+1
94.16
Hullavington
1
pass
1649
pass
1650
+1
99.76
Badminton
pass
1652½
pass
1652¼
104.40
Chipping Sodbury
pass
1655
pass
1655¼
107.09
Westerleigh Jn
1
pass
1656½
pass
1657
111.57
Bristol Parkway [BPW]
2
1700
1701
1700½
1702
1701
1703
+1
DB
DT
112.79
Patchway [PWY]
2
pass
1703½
pass
1704½
+1
116.45
Pilning [PIL]
1
2
pass
1706
pass
1707½
+1
118.03
Severn Tunnel East
1
pass
1708
pass
1708½
122.31
Severn Tunnel West
3
pass
1712½
pass
1712
123.41
Severn Tunnel Junction [STJ]
1½
3
pass
1716½
pass
1714½
-1
DT
DM
125.66
Magor
pass
1718½
pass
1718¼
130.72
Llanwern West Jn
pass
1723
pass
1722
131.63
East Usk Jn.
pass
1723½
pass
1722½
-1
132.55
Maindee East Jn
pass
1724½
pass
1723¾
ML
132.77
Maindee West Jn
½
pass
1725
pass
1726¼
+1
133.31
Newport (South Wales) [NWP]
2
1727
1728
1726½
1728
1727¾
1729
+1
DM
DM
134.13
Gaer Jn
pass
1729½
pass
1730¾
+1
DM
134.68
Ebbw Jn
pass
1730½
pass
1731½
+1
DM
DM
138.41
Marshfield
½
pass
1733
pass
1734¼
+1
142.42
Rumney River Bridge Jn
pass
1736
pass
1736¾
143.01
Pengam Jn
pass
1736½
pass
1737¼
143.46
Moorland Road Junction
1
pass
1737
pass
1737¾
DM
DR
144.16
Long Dyke Jn
pass
1738½
pass
1738¾
E
144.79
Cardiff East
pass
1740
pass
1740
DR
E
145.11
Cardiff Central [CDF]
Pathed as Class 80x on diesel from here
3
1740
1742
1741
1743
1741¼
1743¾
E
D
145.37
Cardiff West
pass
1744
No report
146.36
Leckwith North Jn
pass
1746
pass
1747
+1
D
DM
149.14
St Fagans L C
pass
1748
pass
1749¾
+1
154.08
Miskin
pass
1752
pass
1753¾
+1
156.21
Pontyclun [PYC]
1
pass
1754
pass
1755¾
+1
156.57
Llantrisant [LTI]
pass
1754½
No report
158.53
Llanharan [LLR]
2
pass
1756
pass
1758
+2
161.41
Pencoed [PCD]
1
pass
1758
pass
1800
+2
164.42
Tremains
pass
1800½
pass
1802
+1
165.26
Bridgend [BGN]
1
1802
1803
1801½
1803
1803¾
1806
+3
DM
DM
169.46
Stormy
pass
1807½
pass
1811½
+4
171.21
Pyle [PYL]
1
pass
1808½
pass
1812¾
+4
173.45
Margam Moors Jn.
pass
1810
pass
1814
+4
DM
175.12
Margam East Jn
pass
1811
pass
1815½
+4
176.00
Margam Middle Jn
pass
1811½
pass
1815½
+3
176.70
Port Talbot East
pass
1812½
No report
177.39
Port Talbot Parkway [PTA]
1
1814
1815
1813½
1815
1817¾
1819¼
+4
179.38
Baglan [BAJ]
1
pass
1817
pass
1822½
+5
180.09
Briton Ferry East
pass
1818
pass
1823
+5
181.20
Briton Ferry [BNF]
1
pass
1819
pass
1824¾
+6
181.38
Court Sart Jn
pass
1819
pass
1825¼
+6
183.00
Neath [NTH]
1
1
1821
1822
1821
1822½
1827½
1829
+6
185.06
Skewen [SKE]
1
pass
1825½
pass
1832¼
+6
186.68
Llansamlet [LAS]
1
pass
1828
pass
1834¼
+6
189.42
Landore Junction
pass
1831
pass
1837¼
+6
DM
DSM
190.23
Swansea Loop East
pass
1832
pass
1838¾
+6
190.67
Swansea [SWA]
2
1834
1834
1841¼
+7
DSM
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