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1L34 1820 Carmarthen to London Paddington
Departing on 7th January 2026

operated by
Great Western Railway
5 coaches
Carmarthen - Swansea
800006
5 coaches
Swansea - London Paddington
800006
GBTT
WTT
RTTRealtime
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
1819
-1
U2
Carmarthen Jn [XCI]
pass
1822
pass
1821
-1
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
N/R
Llanelli [LLE]
2
1847
1849
1847
1849
1844¾
1848½
Llandeilo Jn
pass
1851½
pass
1851
Duffryn West
pass
1852
pass
1851¼
Gowerton [GWN]
2
pass
1855½
pass
1854
-1
Cockett West
1 2
pass
1857
pass
1855¾
-1
Swansea Loop West
1½
pass
1903
pass
1900¾
-2
UM
USL
Swansea Loop East
pass
1906½
pass
1904¾
-1
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
1907
1919
USM
USM
Swansea Loop East
pass
1920½
pass
1920½
Landore Junction
pass
1921½
pass
1921¾
USM
UM
Llansamlet [LAS]
2
pass
1924½
pass
1924½
Skewen [SKE]
2
pass
1926½
pass
1926¾
Neath [NTH]
2
1930
1931
1929½
1931
1929
1930¾
Briton Ferry West Jn
pass
1933½
pass
1933¼
Port Talbot Parkway [PTA]
½
2
1937
1938
1937
1938½
1936¾
1938¼
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
1942½
UM
Pyle [PYL]
2
pass
1944½
pass
1943¾
Stormy
pass
1946
pass
1945¾
At platform
Bridgend [BGN]
2
1950
1953
1950
1953
1949½
1952¾
UM
UM
Tremains
pass
1954
pass
1954¾
Pencoed Up Passenger Loop
pass
1956½
No report
Pencoed [PCD]
2
pass
1957
pass
1958¾
+1
Llanharan [LLR]
1
pass
1959
pass
2001
+2
Llantrisant [LTI]
pass
2000½
No report
Pontyclun [PYC]
1 1
2
pass
2001
pass
2003¼
+2
Miskin
pass
2003
pass
2005¼
+2
St Fagans L C
pass
2008
pass
2009
Leckwith North Jn
pass
2011
pass
2011½
UM
C
Cardiff West
pass
2013½
No report
Cardiff Central [CDF]
Pathed as Class 80x on electric from here
1
2014
2018
2014½
2018½
2015½
2017¾
C
B
Cardiff East
pass
2019
pass
2018¾
Long Dyke Jn
pass
2020½
pass
2019¾
B
UM
Moorland Road Junction
pass
2021
pass
2020½
Pengam Jn
pass
2021½
pass
2021
Rumney River Bridge Jn
pass
2021½
pass
2021¼
Marshfield
pass
2024½
pass
2024
Ebbw Jn
½
pass
2027
pass
2026¾
UM
UM
Gaer Jn
pass
2028
pass
2027¼
UM
Newport (South Wales) [NWP]
4
2030
2032
2030
2032
2029¾
2031½
UM
UM
Maindee West Jn
pass
2033
pass
2033½
Maindee East Jn
pass
2033½
pass
2034
ML
East Usk Jn.
pass
2034½
pass
2035
Llanwern West Jn
pass
2035½
pass
2036
Magor
pass
2039
pass
2038¾
Severn Tunnel Junction [STJ]
4
pass
2040½
pass
2041½
+1
UM
UT
Severn Tunnel West
pass
2041½
pass
2042¼
Severn Tunnel East
pass
2045
pass
2046
+1
Pilning [PIL]
1
1
pass
2046
pass
2046¾
Patchway [PWY]
1
pass
2049½
pass
2050
Bristol Parkway [BPW]
3
2051
2055
2051
2055
2052
2055¼
UT
UB
Westerleigh Jn
pass
2058½
pass
2059½
+1
Chipping Sodbury
pass
2100
pass
2101¼
+1
Badminton
pass
2102
pass
2103¾
+1
Hullavington
pass
2105
pass
2106½
+1
Little Somerford
pass
2107½
pass
2109¾
+2
Wootton Bassett Jn
1
pass
2111½
pass
2113¾
+2
UB
UM
Rushey Platt
pass
2115½
pass
2118¾
+3
UM
UR
Swindon [SWI]
3
2117
2119
2117
2119
2121
2122
+3
UR
UM
Highworth Jn
pass
2120
pass
2123¾
+3
Swindon Stratton Green
pass
2120½
pass
2124¼
+4
Swindon South Marston Jn
pass
2121
pass
2124½
+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
2133½
+2
Milton Junction
pass
2132
pass
2134½
+2
Foxhall Jn [XJF]
pass
2133
pass
2135¼
+2
Didcot West End
pass
2133½
No report
Didcot Parkway [DID]
2
pass
2133½
pass
2136
+2
Didcot East Jn
pass
2133½
pass
2136¼
+2
Moreton Cutting
pass
2134½
pass
2136½
+2
Cholsey [CHO]
2
pass
2135½
pass
2138
+2
Goring & Streatley [GOR]
1
2
pass
2137½
pass
2139¾
+2
ML
Pangbourne [PAN]
pass
2139½
pass
2141¾
+2
Tilehurst [TLH]
2
pass
2141½
pass
2142¾
+1
Tilehurst East Jn.
pass
2142
pass
2143
+1
Reading High Level Jn
pass
2143
pass
2144½
+1
ML
Reading Main Line West
pass
2143½
pass
2145¼
+1
Reading [RDG]
11
2144
2146
2144½
2146½
2146¼
2147¾
+1
UM
UM
Reading Main Line East
pass
2147
pass
2148½
+1
Kennet Bridge Jn
pass
2147½
pass
2149¼
+1
Twyford West
pass
2150
pass
2151½
+1
Twyford [TWY]
2
pass
2150½
pass
2152¼
+1
ML
Ruscombe
pass
2151
pass
2152½
+1
Maidenhead [MAI]
2
pass
2154
pass
2155¾
+1
Maidenhead East
pass
2154½
pass
2155¾
+1
Taplow [TAP]
2
pass
2155
pass
2156½
+1
Burnham [BNM]
pass
2155½
pass
2156¾
+1
Slough West
pass
2156½
pass
2157¾
+1
Slough [SLO]
3
pass
2157
pass
2158½
+1
Dolphin Jn
pass
2157½
pass
2159
+1
Langley [LNY]
2
pass
2158
pass
2159¾
+1
Iver [IVR]
2
pass
2159
pass
2200¾
+2
West Drayton Jcn
pass
2159½
pass
2201¼
+1
West Drayton [WDT]
2
pass
2159½
pass
2201¾
+2
West Drayton East
pass
2159½
pass
2201½
+2
Stockley Junction
pass
2200
pass
2201¾
+1
ML
ML
Heathrow Airport Jn
pass
2200½
pass
2202¼
+1
Hayes & Harlington [HAY]
2
pass
2200½
pass
2202½
+2
Southall West Jn
pass
2201
pass
2203
+1
Southall [STL]
2
pass
2201½
pass
2202¾
+1
ML
Southall East Jn
pass
2201½
pass
2203
+1
Hanwell [HAN]
1
pass
2202
pass
2204
+2
West Ealing Junction
pass
2202½
pass
2204½
+2
West Ealing [WEA]
pass
2202½
pass
2204¾
+2
Ealing Broadway [EAL]
2
pass
2202½
pass
2205¼
+2
Acton West
1
pass
2203
pass
2205¼
+2
ML
ML
Acton Main Line [AML]
2
pass
2204
pass
2206
+2
Friars Jn
pass
2204½
No report
Old Oak Common West
pass
2205
pass
2206¾
+1
Old Oak Common East
pass
2205½
pass
2207¼
+1
Ladbroke Grove
pass
2206½
pass
2208¼
+1
UM
3
Portobello Jn (London)
pass
2207
pass
2208¾
+1
Royal Oak Junction
pass
2208
pass
2210
+2
3
2
London Paddington [PAD]
4
2209
2209
2212¼
+3
2
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