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1L34 1820 Carmarthen to London Paddington
Departing on 6th January 2026

operated by
Great Western Railway
5 coaches
Carmarthen - Swansea
800031
10 coaches
Swansea - London Paddington
800025
800021
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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
2
1820
1820
1820
U2
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
1839
1841
Llanelli [LLE]
2
1847
1849
1847
1849
1847
1849
Llandeilo Jn
pass
1851½
pass
1851½
Duffryn West
pass
1852
pass
1852
Gowerton [GWN]
2
pass
1855½
pass
1854¾
Cockett West
1 2
pass
1857
pass
1856½
Swansea Loop West
1½
pass
1903
pass
1900¼
-2
UM
USL
Swansea Loop East
pass
1906½
pass
1902½
-3
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
1909¾
1918½
USM
USM
Swansea Loop East
pass
1920½
pass
1920¼
Landore Junction
pass
1921½
pass
1921½
USM
UM
Llansamlet [LAS]
2
pass
1924½
pass
1924
Skewen [SKE]
2
pass
1926½
pass
1926¼
Neath [NTH]
2
1930
1931
1929½
1931
1928½
1930½
Briton Ferry West Jn
pass
1933½
pass
1933
Port Talbot Parkway [PTA]
½
2
1937
1938
1937
1938½
1936½
1938½
Port Talbot East
pass
1940
No report
Margam Middle Jn
pass
1941
pass
1939¾
-1
Margam East Jn
pass
1942
pass
1941
Margam Moors Jn.
pass
1943
pass
1942¼
UM
Pyle [PYL]
2
pass
1944½
pass
1943¾
Stormy
pass
1946
pass
1945¼
At platform
Bridgend [BGN]
2
1950
1953
1950
1953
1949
1952¾
UM
UM
Tremains
pass
1954
pass
1954¾
Pencoed Up Passenger Loop
pass
1956½
No report
Pencoed [PCD]
2
pass
1957
pass
1956¾
Llanharan [LLR]
1
pass
1959
pass
1958½
Llantrisant [LTI]
pass
2000½
No report
Pontyclun [PYC]
1 1
2
pass
2001
pass
2000¾
Miskin
pass
2003
pass
2002½
St Fagans L C
pass
2008
pass
2006½
-1
Leckwith North Jn
pass
2011
pass
2008¾
-2
UM
C
Cardiff West
pass
2013½
No report
Cardiff Central [CDF]
Pathed as Class 80x on electric from here
1
2014
2018
2014½
2018½
2013
2017¾
C
B
Cardiff East
pass
2019
pass
2019
Long Dyke Jn
pass
2020½
pass
2020
B
UM
Moorland Road Junction
pass
2021
pass
2021
Pengam Jn
pass
2021½
pass
2021½
Rumney River Bridge Jn
pass
2021½
pass
2021¾
Marshfield
pass
2024½
pass
2024¼
Ebbw Jn
½
pass
2027
pass
2027
UM
UM
Gaer Jn
pass
2028
pass
2027½
UM
Newport (South Wales) [NWP]
4
2030
2032
2030
2032
2029½
2031¾
UM
UM
Maindee West Jn
pass
2033
pass
2033½
Maindee East Jn
pass
2033½
pass
2033¾
ML
East Usk Jn.
pass
2034½
pass
2034¾
Llanwern West Jn
pass
2035½
pass
2035¾
Magor
pass
2039
pass
2038½
Severn Tunnel Junction [STJ]
4
pass
2040½
pass
2041¼
UM
UT
Severn Tunnel West
pass
2041½
pass
2042
Severn Tunnel East
pass
2045
pass
2045¾
Pilning [PIL]
1
1
pass
2046
pass
2046½
Patchway [PWY]
1
pass
2049½
pass
2049¾
Bristol Parkway [BPW]
3
2051
2055
2051
2055
2052
2054¼
UT
UB
Westerleigh Jn
pass
2058½
pass
2058¼
Chipping Sodbury
pass
2100
pass
2059¾
Badminton
pass
2102
pass
2102
Hullavington
pass
2105
pass
2104½
Little Somerford
pass
2107½
pass
2107½
Wootton Bassett Jn
1
pass
2111½
pass
2110¾
UB
UM
Rushey Platt
pass
2115½
pass
2114½
UM
UR
Swindon [SWI]
3
2117
2119
2117
2119
2118
2120¾
+1
UR
UM
Highworth Jn
pass
2120
pass
2123
+3
Swindon Stratton Green
pass
2120½
pass
2123½
+3
Swindon South Marston Jn
pass
2121
pass
2124¼
+3
Bourton
pass
2122
pass
2126
+3
Uffington (Oxfordshire)
½
pass
2125½
pass
2128¾
+3
Challow
pass
2127½
pass
2129¾
+2
Wantage Road
1
pass
2129
pass
2132¼
+3
Steventon
pass
2131½
pass
2134
+2
Milton Junction
pass
2132
pass
2135
+3
Foxhall Jn [XJF]
pass
2133
pass
2137
+4
Didcot West End
pass
2133½
No report
Didcot Parkway [DID]
2
pass
2133½
pass
2138¼
+4
Didcot East Jn
pass
2133½
pass
2138½
+5
Moreton Cutting
pass
2134½
pass
2139
+4
Cholsey [CHO]
2
pass
2135½
pass
2140½
+5
Goring & Streatley [GOR]
1
2
pass
2137½
pass
2142½
+5
ML
Pangbourne [PAN]
pass
2139½
pass
2144¼
+4
Tilehurst [TLH]
2
pass
2141½
pass
2145¼
+3
Tilehurst East Jn.
pass
2142
pass
2145½
+3
Reading High Level Jn
pass
2143
pass
2147
+4
ML
Reading Main Line West
pass
2143½
pass
2149¼
+5
Reading [RDG]
11
2144
2146
2144½
2146½
2150¼
2151¾
+5
UM
UM
Reading Main Line East
pass
2147
pass
2152¼
+5
Kennet Bridge Jn
pass
2147½
pass
2153
+5
Twyford West
pass
2150
pass
2155¼
+5
Twyford [TWY]
2
pass
2150½
pass
2156
+5
ML
Ruscombe
pass
2151
pass
2156¼
+5
Maidenhead [MAI]
2
pass
2154
pass
2159¼
+5
Maidenhead East
pass
2154½
pass
2159¼
+5
Taplow [TAP]
2
pass
2155
pass
2200
+5
Burnham [BNM]
pass
2155½
pass
2200¼
+4
Slough West
pass
2156½
pass
2201½
+4
Slough [SLO]
3
pass
2157
pass
2202¼
+5
Dolphin Jn
pass
2157½
pass
2202¾
+5
Langley [LNY]
2
pass
2158
pass
2203½
+5
Iver [IVR]
2
pass
2159
pass
2204½
+5
West Drayton Jcn
pass
2159½
pass
2205
+5
West Drayton [WDT]
2
pass
2159½
pass
2205¼
+6
West Drayton East
pass
2159½
pass
2205¼
+5
Stockley Junction
pass
2200
pass
2205½
+5
ML
ML
Heathrow Airport Jn
pass
2200½
pass
2206
+5
Hayes & Harlington [HAY]
2
pass
2200½
pass
2206¼
+5
Southall West Jn
pass
2201
pass
2206¾
+5
Southall [STL]
2
pass
2201½
pass
2206½
+5
ML
Southall East Jn
pass
2201½
pass
2207
+5
Hanwell [HAN]
1
pass
2202
pass
2208
+5
West Ealing Junction
pass
2202½
pass
2208¼
+6
West Ealing [WEA]
pass
2202½
pass
2208½
+6
Ealing Broadway [EAL]
2
pass
2202½
pass
2209¼
+6
Acton West
1
pass
2203
pass
2209¾
+6
ML
ML
Acton Main Line [AML]
2
pass
2204
pass
2210¼
+6
Friars Jn
pass
2204½
No report
Old Oak Common West
pass
2205
pass
2211½
+6
Old Oak Common East
pass
2205½
pass
2212¼
+6
Ladbroke Grove
pass
2206½
pass
2213¾
+7
UM
3
Portobello Jn (London)
pass
2207
pass
2214¼
+7
Royal Oak Junction
pass
2208
pass
2215½
+7
London Paddington [PAD]
4
2209
2209
2217½
+8
3
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