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1B21 1548 London Paddington to Swansea
Departing on 13th March 2025

operated by
Great Western Railway
10 coaches
800007
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
9
1548
1548
1555¼
+7
3
0.41
Royal Oak Junction
pass
1549
pass
1556½
+7
3
2
1.28
Portobello Jn (London)
pass
1550½
pass
1557¾
+7
1.68
Ladbroke Grove
pass
1551
pass
1558½
+7
2
DM
2.55
Old Oak Common East
pass
1551½
pass
1559½
+7
3.15
Old Oak Common West
pass
1552
pass
1600
+7
3.48
Friars Jn
pass
1552½
pass
1600¼
+7
4.16
Acton Main Line [AML]
pass
1553
pass
1600¾
+7
4.75
Acton West
pass
1553½
pass
1601¼
+7
ML
ML
5.51
Ealing Broadway [EAL]
1
pass
1554
pass
1601½
+7
6.41
West Ealing [WEA]
pass
1554½
pass
1602
+7
6.49
West Ealing Junction
pass
1554½
pass
1602
+7
7.23
Hanwell [HAN]
pass
1554½
pass
1602¼
+7
8.57
Southall East Jn
pass
1555½
pass
1603
+7
9.01
Southall [STL]
1
pass
1555½
pass
1603½
+8
9.65
Southall West Jn
pass
1556
pass
1603½
+7
10.66
Hayes & Harlington [HAY]
1
pass
1556½
pass
1604½
+8
11.09
Heathrow Airport Jn
pass
1556½
pass
1604¼
+7
ML
12.04
Stockley Junction
pass
1557
pass
1604½
+7
12.62
West Drayton East
pass
1557½
pass
1605
+7
13.12
West Drayton [WDT]
1
pass
1557½
pass
1605½
+8
13.26
West Drayton Jcn
pass
1557½
pass
1605½
+8
14.55
Iver [IVR]
1
pass
1558
pass
1606
+8
16.13
Langley [LNY]
1
pass
1559
pass
1607
+8
17.13
Dolphin Jn
pass
1559½
pass
1607½
+8
18.31
Slough [SLO]
2
pass
1600
pass
1608
+8
ML
19.06
Slough West
pass
1600½
pass
1608¼
+7
20.72
Burnham [BNM]
pass
1601½
pass
1609
+7
22.34
Taplow [TAP]
1
pass
1602
pass
1609¾
+7
23.53
Maidenhead East
pass
1602½
pass
1610½
+7
24.14
Maidenhead [MAI]
1
pass
1603
pass
1611
+8
29.40
Ruscombe
pass
1606
pass
1613¼
+7
30.76
Twyford [TWY]
1
1
pass
1606½
pass
1614
+7
ML
31.57
Twyford West
pass
1607
pass
1614½
+7
35.10
Kennet Bridge Jn
pass
1609½
pass
1620¼
+10
35.56
Reading Main Line East
pass
1610
pass
1622¾
+12
35.75
Reading [RDG]
9
1611
1613
1611
1613
1624
1626¾
+13
DM
DM
36.12
Reading Main Line West
pass
1613½
pass
1627½
+13
36.45
Reading High Level Jn
pass
1614
pass
1628¼
+14
ML
38.29
Tilehurst East Jn.
pass
1615
pass
1629½
+14
38.47
Tilehurst [TLH]
1
pass
1615
pass
1629½
+14
41.38
Pangbourne [PAN]
pass
1617
pass
1631
+14
44.55
Goring & Streatley [GOR]
1
1
pass
1619
pass
1633
+14
ML
48.32
Cholsey [CHO]
1
pass
1621
pass
1638
+16
51.32
Moreton Cutting
pass
1623
pass
1642¼
+19
52.61
Didcot East Jn
pass
1624
pass
1643½
+19
53.05
Didcot Parkway [DID]
1
pass
1624
pass
1646
+22
53.20
Didcot West End
pass
1624
No report
53.50
Foxhall Jn [XJF]
pass
1624½
pass
1647
+22
55.14
Milton Junction
pass
1625
pass
1648½
+23
56.27
Steventon
pass
1626
pass
1649½
+23
60.17
Wantage Road
pass
1628
pass
1651¾
+23
63.75
Challow
pass
1630
pass
1653½
+23
66.34
Uffington (Oxfordshire)
1 ½
pass
1631
pass
1654½
+23
72.25
Bourton
pass
1635
pass
1657½
+22
74.46
Swindon South Marston Jn
pass
1636½
pass
1658½
+22
75.58
Swindon Stratton Green
pass
1637
pass
1659½
+22
76.27
Highworth Jn
pass
1637½
pass
1700
+22
76.59
Swindon East Loop
pass
1637½
pass
1701¼
+23
77.18
Swindon [SWI]
4
1638
1640
1638½
1640½
1703
1704¾
+24
DM
DM
82.67
Wootton Bassett Jn
pass
1645
pass
1710¼
+25
DM
DB
89.57
Little Somerford
pass
1649
pass
1714¾
+25
94.16
Hullavington
1
pass
1651½
pass
1717
+25
99.76
Badminton
pass
1655
pass
1719½
+24
104.40
Chipping Sodbury
pass
1657½
pass
1721¾
+24
107.09
Westerleigh Jn
½
pass
1659
pass
1723½
+24
111.57
Bristol Parkway [BPW]
2
1702
1704
1702½
1704½
1728
1730½
+26
DB
DT
112.79
Patchway [PWY]
2
pass
1706
pass
1732
+26
116.45
Pilning [PIL]
2
pass
1708½
pass
1735
+26
118.03
Severn Tunnel East
pass
1709½
pass
1736
+26
122.31
Severn Tunnel West
pass
1713
pass
1739¼
+26
123.41
Severn Tunnel Junction [STJ]
3
pass
1714
pass
1740¾
+26
DT
DM
125.66
Magor
pass
1715½
pass
1742¼
+26
130.72
Llanwern West Jn
pass
1719
pass
1746
+27
131.63
East Usk Jn.
pass
1720
pass
1746½
+26
132.55
Maindee East Jn
pass
1720½
pass
1747½
+26
132.77
Maindee West Jn
pass
1721
pass
1748¼
+27
133.31
Newport (South Wales) [NWP]
2
1722
1724
1722
1724
1749½
1751
+27
DM
DM
134.13
Gaer Jn
pass
1725½
pass
1752¾
+27
DM
134.68
Ebbw Jn
pass
1726½
pass
1753½
+27
DM
DM
138.41
Marshfield
1
pass
1729
pass
1756¼
+27
142.42
Rumney River Bridge Jn
pass
1732½
pass
1758¾
+26
143.01
Pengam Jn
pass
1733
pass
1759¼
+26
143.46
Moorland Road Junction
pass
1733½
pass
1759¾
+26
144.16
Long Dyke Jn
pass
1734
pass
1801
+27
E
144.79
Cardiff East
pass
1735½
pass
1802½
+27
DM
E
145.11
Cardiff Central [CDF]
Pathed as Class 80x on diesel from here
4
1735
1739
1736
1739
1803¾
1806
+27
E
D
145.37
Cardiff West
pass
1740
No report
146.36
Leckwith North Jn
pass
1742
pass
1809¼
+27
D
DM
149.14
St Fagans L C
pass
1744
pass
1811½
+27
154.08
Miskin
pass
1748
pass
1815¾
+27
156.21
Pontyclun [PYC]
1
pass
1750
pass
1817½
+27
156.57
Llantrisant [LTI]
pass
1750½
No report
158.53
Llanharan [LLR]
2
pass
1752
pass
1819¾
+28
161.41
Pencoed [PCD]
1
pass
1754
pass
1821¾
+27
164.42
Tremains
pass
1756½
pass
1823¾
+27
165.26
Bridgend [BGN]
1
1758
1800
1757½
1800
1825¼
1827
+27
DM
DM
169.46
Stormy
½
pass
1804½
pass
1832
+27
171.21
Pyle [PYL]
1
pass
1806
pass
1833¼
+27
173.45
Margam Moors Jn.
pass
1807½
pass
1834½
+27
DM
175.12
Margam East Jn
pass
1808½
pass
1835¾
+27
176.00
Margam Middle Jn
pass
1809
pass
1836
+26
176.70
Port Talbot East
pass
1810
No report
177.39
Port Talbot Parkway [PTA]
1
1811
1812
1811
1812½
1838
1839
+26
179.38
Baglan [BAJ]
1
pass
1814½
pass
1842
+27
180.09
Briton Ferry East
pass
1815½
pass
1842¼
+27
181.20
Briton Ferry [BNF]
1
pass
1816½
pass
1843½
+27
181.38
Court Sart Jn
pass
1816½
pass
1843½
+27
183.00
Neath [NTH]
1 2½
1
1819
1820
1818½
1820
1845¼
1846½
+26
185.06
Skewen [SKE]
1
pass
1824
pass
1849¾
+26
186.68
Llansamlet [LAS]
1
pass
1826½
pass
1851¾
+25
189.42
Landore Junction
pass
1831
pass
1854½
+23
DM
DSM
190.23
Swansea Loop East
pass
1832
pass
1856
+24
190.67
Swansea [SWA]
2
1834
1834
1858¼
+24
DSM
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