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1L36 2023 Swansea to London Paddington
Departing on 1st January 2026

operated by
Great Western Railway
GBTT
WTT
Route
Location
Pl
Arr
Dep
Arr
Dep
Path
Line
Swansea [SWA]
forms from 1B24 from London Paddington
2
2023
2023
Swansea Loop East
pass
2024½
Neath [NTH]
2034
2035
2033½
2035
Briton Ferry West Jn
pass
2037½
Port Talbot Parkway [PTA]
2
2041
2042
2041
2042½
Margam East Jn
pass
2045½
Margam Moors Jn.
½
pass
2046½
Stormy
pass
2050
Bridgend [BGN]
2
2054
2055
2054
2055½
Pencoed [PCD]
pass
2059½
Pontyclun [PYC]
1
pass
2103½
Leckwith North Jn
1
pass
2112½
C
Cardiff Central [CDF]
Pathed as Class 80x on electric from here
2
2116
2120
2117
2120
B
Long Dyke Jn
pass
2122
ML
Marshfield
pass
2126
Ebbw Jn
pass
2128½
Gaer Jn
pass
2129
UM
Newport (South Wales) [NWP]
3
2131
2133
2131
2133
ML
Maindee West Jn
pass
2134
Maindee East Jn
pass
2134½
ML
Llanwern West Jn
pass
2136½
Severn Tunnel Junction [STJ]
4
pass
2141½
Severn Tunnel West
pass
2142½
Severn Tunnel East
pass
2146
Pilning [PIL]
1
1
pass
2147
Patchway [PWY]
1
pass
2150½
Bristol Parkway [BPW]
1
3
2152
2154
2152
2154
Westerleigh Jn
pass
2158½
Hullavington
pass
2205
Wootton Bassett Jn
1
pass
2211½
Swindon [SWI]
3
2217
2219
2217
2219
Uffington (Oxfordshire)
pass
2225½
Challow
pass
2227
Wantage Road
1
pass
2228½
Didcot Parkway [DID]
2
pass
2233
ML
Goring & Streatley [GOR]
pass
2237
ML
Reading High Level Jn
1
pass
2241½
ML
Reading [RDG]
10
2243
2247
2244
2247
UML
Kennet Bridge Jn
pass
2248
ML
Twyford West
pass
2251
RL
Twyford [TWY]
½
4
pass
2252
RL
Maidenhead [MAI]
3
4
pass
2256
RL
Slough [SLO]
1 4½
5
pass
2303
RL
Stockley Junction
pass
2313½
RL
ML
Heathrow Airport Jn
pass
2314½
ML
Southall [STL]
2
pass
2316½
ML
Acton West
1
pass
2318
ML
ML
Ladbroke Grove
pass
2321½
ML
3
Portobello Jn (London)
pass
2322
3
Royal Oak Junction
pass
2323
3
London Paddington [PAD]
8
2324
2324
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