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1L34 1820 Carmarthen to London Paddington
Departing on 16th December 2025

operated by
Great Western Railway
5 coaches
Carmarthen - Swansea
800026
10 coaches
Swansea - London Paddington
800003
800026
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WTT
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Route
Location
Pl
Arr
Dep
Arr
Dep
Arr
Dep
Dly
Path
Line
Carmarthen [CMN]
Pathed as Class 80x on diesel at 125mph
1
1820
1820
1820
U1
Carmarthen Jn [XCI]
pass
1822
pass
1822
UU
Ferryside [FYS]
pass
1830½
No report
Bertwyn Level Crossing
pass
1833
No report
Kidwelly [KWL]
1
pass
1834½
No report
Kidwelly Junction
pass
1835
No report
Pembrey & Burry Port [PBY]
1839
1840
1839½
1841
No report
Llanelli [LLE]
2
1847
1849
1847
1849
1845¾
1848¾
Llandeilo Jn
pass
1851½
pass
1851¼
Duffryn West
pass
1852
pass
1851¾
Gowerton [GWN]
2
pass
1855½
pass
1854½
Cockett West
1 2
pass
1857
pass
1856¼
Swansea Loop West
1½
pass
1903
pass
1900
-2
UM
USL
Swansea Loop East
pass
1906½
pass
1902
-4
USL
USM
Swansea [SWA]
Pathed as Class 80x on diesel from here
joins with 1B21 from London Paddington
Service reverses here, gains coaches here
3
1909
1919
1909
1919
1905
1919
USM
DSM
Swansea Loop East
pass
1920½
pass
1920¾
Landore Junction
pass
1921½
No report
Llansamlet [LAS]
2
pass
1924½
pass
1926¼
+1
Skewen [SKE]
2
pass
1926½
pass
1928¼
+1
Neath [NTH]
2
1930
1931
1929½
1931
1930¾
1932¼
+1
Briton Ferry West Jn
pass
1933½
pass
1935
+1
Port Talbot Parkway [PTA]
½
2
1937
1938
1937
1938½
1938½
1939½
+1
Port Talbot East
pass
1940
No report
Margam Middle Jn
pass
1941
pass
1941
Margam East Jn
pass
1942
pass
1942½
Margam Moors Jn.
pass
1943
pass
1944
+1
UM
Pyle [PYL]
2
pass
1944½
pass
1945½
Stormy
pass
1946
pass
1947½
+1
At platform
Bridgend [BGN]
2
1950
1953
1950
1953
1951¼
1952¾
UM
UM
Tremains
pass
1954
pass
1954¾
Pencoed Up Passenger Loop
pass
1956½
No report
Pencoed [PCD]
2
pass
1957
pass
1957
Llanharan [LLR]
1
pass
1959
pass
1959
Llantrisant [LTI]
pass
2000½
No report
Pontyclun [PYC]
1 1
2
pass
2001
pass
2001
Miskin
pass
2003
pass
2003
St Fagans L C
pass
2008
pass
2006¾
-1
Leckwith North Jn
pass
2011
pass
2009¼
-1
UM
C
Cardiff West
pass
2013½
No report
Cardiff Central [CDF]
Pathed as Class 80x on electric from here
1
2014
2018
2014½
2018½
2013½
2017¾
C
B
Cardiff East
pass
2019
pass
2019¼
Long Dyke Jn
pass
2020½
pass
2020½
B
UM
Moorland Road Junction
pass
2021
pass
2021½
Pengam Jn
pass
2021½
pass
2021¾
Rumney River Bridge Jn
pass
2021½
pass
2022
Marshfield
pass
2024½
pass
2024¾
Ebbw Jn
½
pass
2027
pass
2027¾
UM
UM
Gaer Jn
pass
2028
pass
2028
UM
Newport (South Wales) [NWP]
3
2030
2032
2030
2032
2031
2033
+1
UM
UM
Maindee West Jn
pass
2033
pass
2034½
+1
Maindee East Jn
pass
2033½
pass
2035¼
+1
ML
East Usk Jn.
pass
2034½
pass
2036
+1
Llanwern West Jn
pass
2035½
pass
2037
+1
Magor
pass
2039
pass
2040
+1
Severn Tunnel Junction [STJ]
4
pass
2040½
pass
2042¾
+2
UM
UT
Severn Tunnel West
pass
2041½
pass
2043½
+2
Severn Tunnel East
pass
2045
pass
2047
+2
Pilning [PIL]
1
1
pass
2046
pass
2048¼
+2
Patchway [PWY]
1
pass
2049½
pass
2051
+1
Bristol Parkway [BPW]
3
2051
2055
2051
2055
2053
2054½
UT
UB
Westerleigh Jn
pass
2058½
pass
2058½
Chipping Sodbury
pass
2100
pass
2100
Badminton
pass
2102
pass
2102¼
Hullavington
pass
2105
pass
2104¾
Little Somerford
pass
2107½
pass
2107¾
Wootton Bassett Jn
1
pass
2111½
pass
2111
UB
UM
Swindon [SWI]
1
2117
2119
2117
2119
2116¾
2119
UR
UM
Highworth Jn
pass
2120
pass
2121
+1
Swindon Stratton Green
pass
2120½
pass
2121½
+1
Swindon South Marston Jn
pass
2121
pass
2122
+1
Bourton
pass
2122
pass
2123¼
+1
Uffington (Oxfordshire)
½
pass
2125½
pass
2126¼
Challow
pass
2127½
pass
2127¼
Wantage Road
1
pass
2129
pass
2129¾
Steventon
pass
2131½
pass
2132¾
+1
Milton Junction
pass
2132
pass
2133½
+1
Foxhall Jn [XJF]
pass
2133
pass
2134½
+1
Didcot West End
pass
2133½
No report
Didcot Parkway [DID]
2
pass
2133½
pass
2135¼
+1
Didcot East Jn
pass
2133½
pass
2135½
+1
Moreton Cutting
pass
2134½
pass
2135½
+1
Cholsey [CHO]
2
pass
2135½
pass
2137¼
+1
Goring & Streatley [GOR]
1
2
pass
2137½
pass
2139
+1
ML
Pangbourne [PAN]
pass
2139½
pass
2140¾
+1
Tilehurst [TLH]
2
pass
2141½
pass
2141¾
Tilehurst East Jn.
pass
2142
pass
2142
Reading High Level Jn
pass
2143
pass
2143½
ML
Reading Main Line West
pass
2143½
pass
2144
Reading [RDG]
11
2144
2146
2144½
2146½
2145
2146¼
UM
UM
Reading Main Line East
pass
2147
pass
2147
Kennet Bridge Jn
pass
2147½
pass
2147¾
Twyford West
pass
2150
pass
2149¾
Twyford [TWY]
2
pass
2150½
pass
2150½
ML
Ruscombe
pass
2151
pass
2150¾
Maidenhead [MAI]
2
pass
2154
pass
2153¾
Maidenhead East
pass
2154½
pass
2153¾
Taplow [TAP]
2
pass
2155
pass
2154½
Burnham [BNM]
pass
2155½
pass
2154¾
Slough West
pass
2156½
pass
2156¼
Slough [SLO]
3
pass
2157
pass
2157¼
Dolphin Jn
pass
2157½
pass
2158
Langley [LNY]
2
pass
2158
pass
2158¾
Iver [IVR]
2
pass
2159
pass
2159½
West Drayton Jcn
pass
2159½
pass
2159¾
West Drayton [WDT]
2
pass
2159½
pass
2200¼
West Drayton East
pass
2159½
pass
2200¼
Stockley Junction
pass
2200
pass
2200½
ML
ML
Heathrow Airport Jn
pass
2200½
pass
2200¾
Hayes & Harlington [HAY]
2
pass
2200½
pass
2201¼
Southall West Jn
pass
2201
pass
2201½
Southall [STL]
2
pass
2201½
pass
2201½
ML
Southall East Jn
pass
2201½
pass
2201¾
Hanwell [HAN]
1
pass
2202
pass
2202¾
West Ealing Junction
pass
2202½
pass
2203¼
West Ealing [WEA]
pass
2202½
pass
2203½
+1
Ealing Broadway [EAL]
2
pass
2202½
pass
2204
+1
Acton West
1
pass
2203
pass
2204
+1
ML
ML
Acton Main Line [AML]
2
pass
2204
pass
2204¾
+1
Friars Jn
pass
2204½
No report
Old Oak Common West
pass
2205
pass
2205½
Old Oak Common East
pass
2205½
pass
2206¼
Ladbroke Grove
pass
2206½
pass
2207
UM
3
Portobello Jn (London)
pass
2207
pass
2207¾
Royal Oak Junction
pass
2208
pass
2208¾
3
2
London Paddington [PAD]
4
2209
2209
2211
+2
2
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