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1B27 1635 London Paddington to Swansea
Departing on 10th January 2026

operated by
Great Western Railway
10 coaches
London Paddington - Bristol Temple Meads
800018
800015
10 coaches
Bristol Temple Meads - Bristol Parkway
800015
800018
10 coaches
Bristol Parkway - Swansea
800018
800015
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
8
1635
1635
1635¼
3
0.41
Royal Oak Junction
pass
1636
pass
1636½
3
2
1.28
Portobello Jn (London)
pass
1637½
pass
1637¾
1.68
Ladbroke Grove
pass
1638
pass
1638½
2
DM
2.55
Old Oak Common East
pass
1638½
pass
1639½
+1
3.15
Old Oak Common West
pass
1639
pass
1640¼
+1
3.48
Friars Jn
pass
1639½
pass
1640½
+1
4.16
Acton Main Line [AML]
pass
1640
pass
1641¼
+1
4.75
Acton West
pass
1640½
pass
1641¾
+1
ML
ML
5.51
Ealing Broadway [EAL]
1
pass
1641
pass
1642
+1
6.41
West Ealing [WEA]
pass
1641½
pass
1642¾
+1
6.49
West Ealing Junction
pass
1641½
pass
1642¾
+1
7.23
Hanwell [HAN]
pass
1641½
pass
1643
+1
8.57
Southall East Jn
pass
1642½
pass
1643¾
+1
9.01
Southall [STL]
1
pass
1642½
pass
1644¼
+1
9.65
Southall West Jn
pass
1643
pass
1644¼
+1
10.66
Hayes & Harlington [HAY]
1
pass
1643½
pass
1645¼
+1
11.09
Heathrow Airport Jn
pass
1643½
pass
1645
+1
ML
12.04
Stockley Junction
pass
1644
pass
1645¼
+1
12.62
West Drayton East
pass
1644½
pass
1645¾
+1
13.12
West Drayton [WDT]
1
pass
1644½
pass
1646¼
+1
13.26
West Drayton Jcn
pass
1644½
pass
1646¼
+1
14.55
Iver [IVR]
1
pass
1645
pass
1646¾
+1
16.13
Langley [LNY]
1
pass
1646
pass
1648
+2
17.13
Dolphin Jn
pass
1646½
pass
1648½
+2
18.31
Slough [SLO]
2
pass
1647
pass
1649¼
+2
ML
19.06
Slough West
pass
1647½
pass
1649¾
+2
20.72
Burnham [BNM]
pass
1648½
pass
1650¾
+2
22.34
Taplow [TAP]
1
pass
1649
pass
1651½
+2
23.53
Maidenhead East
pass
1649½
pass
1652¼
+2
24.14
Maidenhead [MAI]
1
pass
1650
pass
1652¾
+2
29.40
Ruscombe
pass
1653
pass
1655
+2
30.76
Twyford [TWY]
1
1
pass
1653½
pass
1655¾
+2
ML
31.57
Twyford West
pass
1654
pass
1656
+2
35.10
Kennet Bridge Jn
1
pass
1656½
pass
1659
+2
35.56
Reading Main Line East
pass
1658
pass
1702
+4
35.75
Reading [RDG]
1
8
1659
1702
1659
1702
1703¼
1705¾
+3
DM
UW
36.12
Reading Main Line West
pass
1703
pass
1706½
+3
UW
DW
36.61
Oxford Road Jn
1
pass
1705
pass
1707¾
+2
UW
36.70
Reading West [RDW]
1
pass
1705
pass
1708
+2
37.57
Southcote Jn
pass
1707
pass
1709
+2
41.17
Theale [THE]
4
2
pass
1710
pass
1711¾
+1
44.58
Aldermaston [AMT]
2
pass
1713½
pass
1714¼
+1
46.54
Midgham [MDG]
1
pass
1715
pass
1714¾
49.40
Thatcham [THA]
1
pass
1717½
pass
1717½
52.26
Newbury Racecourse [NRC]
1
pass
1720½
pass
1719¼
53.01
Newbury [NBY]
6
Pathed as Class 80x on diesel from here
pass
1721
pass
1719½
-1
58.33
Kintbury [KIT]
1
pass
1727
pass
1725
-2
61.38
Hungerford [HGD]
2
pass
1730½
pass
1727½
-2
66.28
Bedwyn [BDW]
1
pass
1736
pass
1731¾
-4
70.02
Savernake
pass
1738½
pass
1733½
-5
75.21
Pewsey [PEW]
1
pass
1742½
pass
1740¼
-2
78.68
Woodborough
½
pass
1745
pass
1744¼
88.01
Lavington
1 ½
pass
1750
pass
1749¾
94.40
Heywood Road Jn
4½
pass
1756
pass
1756½
DW
DWL
95.27
Hawkeridge Jn
pass
1803
pass
1759½
-3
DWL
DT
98.60
Trowbridge [TRO]
1
pass
1807½
pass
1805
-2
100.01
Bradford Jn
1
pass
1809½
pass
1807¼
-2
102.04
Bradford-on-Avon [BOA]
1
pass
1812
pass
1810½
-1
103.30
Avoncliff [AVF]
1
pass
1814
pass
1812
-1
104.23
Freshford [FFD]
1
pass
1815
pass
1812¼
-2
109.18
Bathampton Jn
pass
1821½
pass
1817¼
-4
DT
DM
111.39
Bath Spa [BTH]
1
1
1825
1827
1825
1827
1820½
1826¾
112.40
Oldfield Park [OLF]
1
pass
1828½
pass
1828½
113.40
Twerton
pass
1829
pass
1829½
118.31
Keynsham [KYN]
1
pass
1833½
pass
1832½
122.14
North Somerset Jn
pass
1836½
pass
1836¼
122.48
Bristol East Jn
pass
1837
pass
1837½
DM
UF
122.78
Bristol Temple Meads [BRI]
Service reverses here
6
1839
1846
1838½
1846½
1839½
1845¾
UF
UF
123.28
Bristol East Jn
pass
1847½
pass
1847
UF
UFM
123.52
Dr Day's Jn
pass
1848½
pass
1848¼
ML
124.01
Lawrence Hill [LWH]
pass
1849
pass
1848¾
124.47
Stapleton Road [SRD]
pass
1849½
pass
1849¾
125.00
Narroways Hill Jn
pass
1850
pass
1850
126.57
Horfield Junction
pass
1851½
pass
1851½
127.27
Filton Abbey Wood [FIT]
1 1
2
pass
1852½
pass
1852½
UFM
UD
127.47
Filton Jn
pass
1853
No report
128.66
Bristol Parkway [BPW]
Pathed as Class 80x on electric from here
Service reverses here
2
1857
1905
1857
1905½
1856
1905
DT
130.08
Patchway [PWY]
2
pass
1907
pass
1906½
133.54
Pilning [PIL]
2
pass
1909½
pass
1909½
135.12
Severn Tunnel East
pass
1910½
pass
1910¼
139.40
Severn Tunnel West
pass
1914
pass
1913¾
140.50
Severn Tunnel Junction [STJ]
3
pass
1915
pass
1915¾
DT
DM
142.75
Magor
pass
1916½
pass
1918¾
+2
148.01
Llanwern West Jn
1
pass
1920
pass
1922½
+2
148.72
East Usk Jn.
pass
1921
pass
1923¼
+2
149.64
Maindee East Jn
pass
1922½
pass
1924¼
+1
ML
150.06
Maindee West Jn
pass
1923
pass
1925
+2
150.40
Newport (South Wales) [NWP]
2
1924
1926
1924
1926
1926¾
1927¾
+1
DM
DM
151.22
Gaer Jn
pass
1927½
pass
1929¼
+1
DM
151.77
Ebbw Jn
pass
1928½
pass
1930
+1
DM
DM
155.50
Marshfield
1
pass
1931
pass
1932¾
+1
159.51
Rumney River Bridge Jn
pass
1934½
pass
1935¼
160.10
Pengam Jn
pass
1935
pass
1935¾
160.55
Moorland Road Junction
pass
1935½
pass
1936¼
161.25
Long Dyke Jn
pass
1936
pass
1937¼
+1
E
162.08
Cardiff East
pass
1937½
pass
1938½
DM
E
162.20
Cardiff Central [CDF]
Pathed as Class 80x on diesel from here
4
1939
1940
1938½
1940½
1939½
1942¼
+1
E
D
162.46
Cardiff West
pass
1941½
No report
163.45
Leckwith North Jn
pass
1943½
pass
1945¼
+1
D
DM
166.23
St Fagans L C
pass
1945½
pass
1947½
+1
171.17
Miskin
pass
1949½
pass
1951½
+1
173.30
Pontyclun [PYC]
1
pass
1951½
pass
1953¼
+1
173.66
Llantrisant [LTI]
pass
1952
No report
175.62
Llanharan [LLR]
2
pass
1953½
pass
1955½
+2
178.50
Pencoed [PCD]
1
pass
1955½
pass
1957¼
+1
181.51
Tremains
pass
1958
pass
1959¼
+1
182.35
Bridgend [BGN]
1
1959
2000
1959
2000½
2000¾
2002
+1
DM
DM
186.55
Stormy
pass
2005
pass
2007
+2
188.30
Pyle [PYL]
1
pass
2006
pass
2008
+2
190.54
Margam Moors Jn.
pass
2007½
pass
2009¼
+1
DM
192.21
Margam East Jn
pass
2008½
pass
2010½
+2
193.09
Margam Middle Jn
pass
2009
pass
2010¾
+1
193.79
Port Talbot East
pass
2010
No report
194.48
Port Talbot Parkway [PTA]
1
2011
2012
2011
2012½
2012¾
2013¾
+1
196.47
Baglan [BAJ]
1
pass
2014½
pass
2016½
+1
197.18
Briton Ferry East
pass
2015½
pass
2016¾
+1
198.29
Briton Ferry [BNF]
1
pass
2016½
pass
2018
+1
198.47
Court Sart Jn
pass
2016½
pass
2018
+1
200.09
Neath [NTH]
1
1
2019
2020
2018½
2020
2019¾
2021
+1
202.15
Skewen [SKE]
1
pass
2023
pass
2024
+1
203.77
Llansamlet [LAS]
1
pass
2025½
pass
2026
206.51
Landore Junction
pass
2028½
pass
2028½
DM
DSM
207.32
Swansea Loop East
pass
2029½
pass
2030
207.76
Swansea [SWA]
3
2031
2031
2032
+1
DSM
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