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1L36 2023 Swansea to London Paddington
Departing on 2nd 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]
Pathed as Class 80x on diesel from here
Service reverses here
4
2152
2201
2152
2201
Filton Abbey Wood [FIT]
½
1
pass
2203½
ML
Horfield Junction
1
pass
2204½
Dr Day's Jn
pass
2208
DF
Bristol East Jn
pass
2209
Bristol Temple Meads [BRI]
Service reverses here
13
2211
2230
2210½
2230
UM
Bristol East Jn
pass
2231
North Somerset Jn
3
pass
2232
Bath Spa [BTH]
2
2244
2247
2244
2247
Bathampton Jn
pass
2250½
Bathampton Sig Bl1990
½
pass
2254½
Bradford-on-Avon [BOA]
1
pass
2259
Bradford Jn
pass
2302½
Hawkeridge Jn
pass
2308½
Heywood Road Jn
pass
2311½
Lavington
pass
2316½
Woodborough
pass
2322½
Bedwyn [BDW]
2
pass
2330½
Hungerford [HGD]
pass
2334½
Newbury [NBY]
Pathed as Class 80x on electric from here
pass
2339½
Theale [THE]
1
pass
2345½
Southcote Jn
pass
2349½
Oxford Road Jn
pass
2350½
UFM
Reading [RDG]
10
2352
0001
2353
0001½
UML
Kennet Bridge Jn
pass
0002½
ML
Twyford [TWY]
2
pass
0005½
ML
Maidenhead [MAI]
2
pass
0009
ML
Slough West
½
pass
0011½
RL
Slough [SLO]
1 3
5
pass
0012½
RL
Heathrow Airport Jn
1
pass
0022½
RL
Southall West Jn
½
pass
0024½
ML
Southall [STL]
½
2
pass
0025½
ML
Acton West
1
pass
0027½
ML
ML
Ladbroke Grove
½
pass
0031
ML
3
Portobello Jn (London)
pass
0032
3
Royal Oak Junction
pass
0033
3
London Paddington [PAD]
2
0034
0034
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