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1B25 1718 London Paddington to Swansea
Departing on 15th December 2025

operated by
Great Western Railway
5 coaches
London Paddington - Cardiff Central
800025
10 coaches
Cardiff Central - Swansea
800031
800019
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
forms from 1L23 from Cardiff Central and forms from 1D29 from Oxford
9
1718
1718
1718¾
4
0.41
Royal Oak Junction
pass
1719
pass
1719¾
4
4
1.28
Portobello Jn (London)
pass
1720½
pass
1721¼
4
3
1.68
Ladbroke Grove
pass
1721
pass
1722
+1
3
DM
2.55
Old Oak Common East
pass
1721½
pass
1722¾
+1
3.15
Old Oak Common West
pass
1722
pass
1723¼
+1
3.48
Friars Jn
pass
1722½
pass
1723½
+1
4.16
Acton Main Line [AML]
pass
1723
pass
1724¼
+1
4.75
Acton West
pass
1723½
pass
1724½
+1
ML
ML
5.51
Ealing Broadway [EAL]
1
pass
1724
pass
1725
+1
6.41
West Ealing [WEA]
pass
1724½
pass
1725½
+1
6.49
West Ealing Junction
pass
1724½
pass
1725½
+1
7.23
Hanwell [HAN]
pass
1724½
pass
1725¾
+1
8.57
Southall East Jn
pass
1725½
pass
1726½
+1
9.01
Southall [STL]
1
pass
1725½
pass
1727
+1
9.65
Southall West Jn
pass
1726
pass
1727
+1
10.66
Hayes & Harlington [HAY]
1
pass
1726½
pass
1727¾
+1
11.09
Heathrow Airport Jn
pass
1726½
pass
1727½
+1
ML
12.04
Stockley Junction
pass
1727
pass
1728
+1
12.62
West Drayton East
pass
1727½
pass
1728½
+1
13.12
West Drayton [WDT]
1
pass
1727½
pass
1729
+1
13.26
West Drayton Jcn
pass
1727½
pass
1729
+1
14.55
Iver [IVR]
1
pass
1728
pass
1729½
+1
16.13
Langley [LNY]
1
pass
1729
pass
1730½
+1
17.13
Dolphin Jn
pass
1729½
pass
1730¾
+1
18.31
Slough [SLO]
2
pass
1730
pass
1731¼
+1
ML
19.06
Slough West
pass
1730½
pass
1731½
+1
20.72
Burnham [BNM]
pass
1731½
pass
1732¼
+1
22.34
Taplow [TAP]
1
pass
1732
pass
1733
+1
23.53
Maidenhead East
pass
1732½
pass
1734
+1
24.14
Maidenhead [MAI]
1
pass
1733
pass
1734¼
+1
29.40
Ruscombe
pass
1736
pass
1736½
30.76
Twyford [TWY]
1
1
pass
1736½
pass
1737¼
ML
31.57
Twyford West
pass
1737
pass
1737¾
35.10
Kennet Bridge Jn
pass
1739½
pass
1740
35.56
Reading Main Line East
pass
1740
pass
1740¾
35.75
Reading [RDG]
9
1741
1743
1741
1743
1741¾
1743½
DM
DM
36.12
Reading Main Line West
pass
1743½
pass
1744¼
36.45
Reading High Level Jn
pass
1744
pass
1745
+1
ML
38.29
Tilehurst East Jn.
pass
1745
pass
1746¼
+1
38.47
Tilehurst [TLH]
1
pass
1745
pass
1746¼
+1
41.38
Pangbourne [PAN]
pass
1747
pass
1747½
44.55
Goring & Streatley [GOR]
1
1
pass
1749
pass
1749¼
ML
48.32
Cholsey [CHO]
1
pass
1751½
pass
1751
51.32
Moreton Cutting
pass
1753½
pass
1752¼
52.61
Didcot East Jn
pass
1754½
pass
1753
-1
53.05
Didcot Parkway [DID]
1
1755
1756
1755
1756½
1754¼
1755¾
53.20
Didcot West End
pass
1757
No report
53.50
Foxhall Jn [XJF]
pass
1757½
pass
1756¾
55.14
Milton Junction
pass
1758½
pass
1757¾
56.27
Steventon
pass
1759
pass
1758¾
60.17
Wantage Road
pass
1801½
pass
1801¼
63.75
Challow
pass
1803½
pass
1803¼
66.34
Uffington (Oxfordshire)
1
pass
1804½
pass
1804¼
72.25
Bourton
pass
1808
pass
1807¼
74.46
Swindon South Marston Jn
pass
1809½
pass
1808¼
75.58
Swindon Stratton Green
pass
1810
pass
1809½
76.27
Highworth Jn
pass
1810½
pass
1809¾
76.59
Swindon East Loop
pass
1810½
pass
1811
77.18
Swindon [SWI]
4
1812
1813
1811½
1813½
1812
1813½
DM
DM
82.67
Wootton Bassett Jn
pass
1818
pass
1817¾
DM
DB
89.57
Little Somerford
pass
1822
pass
1821¾
94.16
Hullavington
1
pass
1824½
pass
1824
99.76
Badminton
pass
1828
pass
1826½
-1
104.40
Chipping Sodbury
pass
1830½
pass
1829¼
-1
107.09
Westerleigh Jn
pass
1832
pass
1831
111.57
Bristol Parkway [BPW]
1
2
1834
1837
1835
1837
1834¾
1836¾
DB
DT
112.79
Patchway [PWY]
2
pass
1839½
pass
1838¼
-1
116.45
Pilning [PIL]
2
pass
1842
pass
1841
118.03
Severn Tunnel East
pass
1843
pass
1842
122.31
Severn Tunnel West
pass
1846½
pass
1845¼
-1
123.41
Severn Tunnel Junction [STJ]
3
pass
1847½
pass
1846¾
DT
DM
125.66
Magor
pass
1849
pass
1848¼
130.72
Llanwern West Jn
pass
1852½
pass
1852
131.63
East Usk Jn.
pass
1853
pass
1852½
132.55
Maindee East Jn
1
pass
1854
pass
1853½
ML
132.77
Maindee West Jn
pass
1855½
pass
1854¼
-1
133.31
Newport (South Wales) [NWP]
2
1857
1858
1856½
1858½
1855½
1857¾
DM
DM
134.13
Gaer Jn
pass
1900
pass
1859½
DM
134.68
Ebbw Jn
pass
1901
pass
1901½
DM
DM
138.41
Marshfield
1
pass
1903½
pass
1905½
+2
142.42
Rumney River Bridge Jn
pass
1907
pass
1908¼
+1
143.01
Pengam Jn
pass
1907½
pass
1908¾
+1
143.46
Moorland Road Junction
pass
1908
pass
1909¼
+1
144.16
Long Dyke Jn
pass
1908½
pass
2004¼
+55
E
144.79
Cardiff East
pass
1910
pass
2007¼
+57
DM
D
145.11
Cardiff Central [CDF]
Pathed as Class 80x on diesel from here
1
1910
1918
1911
1918
2008¾
2021¼
+63
D
D
145.37
Cardiff West
pass
1919
No report
146.36
Leckwith North Jn
pass
1921
pass
2024¾
+63
D
DM
149.14
St Fagans L C
pass
1923
pass
2027½
+64
154.08
Miskin
pass
1927
pass
2031½
+64
156.21
Pontyclun [PYC]
7
1
pass
1929
pass
2033½
+64
156.57
Llantrisant [LTI]
pass
1929½
No report
158.53
Llanharan [LLR]
2
pass
1932½
pass
2035½
+63
161.41
Pencoed [PCD]
1
pass
1937
pass
2037¾
+60
164.42
Tremains
pass
1942
pass
2039½
+57
165.26
Bridgend [BGN]
1
1944
1945
1943½
1945
pass
2040¾
+55
DM
DM
169.46
Stormy
pass
1949½
pass
2045
+55
171.21
Pyle [PYL]
1
pass
1950½
pass
2046¼
+55
173.45
Margam Moors Jn.
pass
1952
pass
2047½
+55
DM
175.12
Margam East Jn
pass
1953
pass
2048¾
+55
176.00
Margam Middle Jn
pass
1953½
pass
2049
+55
176.70
Port Talbot East
pass
1954½
No report
177.39
Port Talbot Parkway [PTA]
1
1956
1957
1955½
1957
pass
2051¾
+54
179.38
Baglan [BAJ]
1
pass
1959
pass
2054¼
+55
180.09
Briton Ferry East
pass
2000
pass
2054¾
+55
181.20
Briton Ferry [BNF]
1
pass
2001
pass
2056¼
+55
181.38
Court Sart Jn
pass
2001
pass
2056½
+55
183.00
Neath [NTH]
1
1
2003
2004
2003
2004½
2100¼
2100¾
+56
185.06
Skewen [SKE]
1
pass
2007½
pass
2104
+56
186.68
Llansamlet [LAS]
1
pass
2010
pass
2106¼
+56
189.42
Landore Junction
pass
2013
pass
2109¼
+56
DM
DSM
190.23
Swansea Loop East
pass
2014
pass
2110¾
+56
190.67
Swansea [SWA]
2
2016
2016
2113
+57
DSM
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