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1L23 1454 Cardiff Central to London Paddington
Departing on 7th January 2026

operated by
Great Western Railway
5 coaches
800020
GBTT
WTT
RTTRealtime
Route
Mi.Ch
Location
Pl
Arr
Dep
Arr
Dep
Arr
Dep
Dly
Path
Line
0.00
Cardiff Central [CDF]
Pathed as Class 80x on electric at 125mph
forms from 5L23 from Cardiff Central
2
1454
1454
1453¾
B
0.12
Cardiff East
pass
1455
pass
1455
0.75
Long Dyke Jn
pass
1456½
pass
1456
B
UM
1.45
Moorland Road Junction
pass
1457
pass
1456¾
2.10
Pengam Jn
pass
1457½
pass
1457¼
2.49
Rumney River Bridge Jn
pass
1457½
pass
1457½
6.50
Marshfield
pass
1500½
pass
1500
10.23
Ebbw Jn
pass
1503
pass
1502¾
UM
UM
10.78
Gaer Jn
pass
1503½
pass
1503
UM
11.60
Newport (South Wales) [NWP]
3
1506
1507
1505½
1507
1505
1507¾
UM
UM
12.14
Maindee West Jn
pass
1508
pass
1509
+1
12.36
Maindee East Jn
pass
1508½
pass
1509½
+1
ML
13.28
East Usk Jn.
pass
1509½
pass
1510¼
14.19
Llanwern West Jn
pass
1510½
pass
1511¼
19.25
Magor
pass
1514
pass
1514¼
21.50
Severn Tunnel Junction [STJ]
4
pass
1515½
pass
1516¾
+1
UM
UT
22.60
Severn Tunnel West
pass
1516½
pass
1517½
+1
27.08
Severn Tunnel East
pass
1520
pass
1521
+1
28.46
Pilning [PIL]
1
1
pass
1521
pass
1522¼
+1
32.12
Patchway [PWY]
1
pass
1524½
pass
1524¾
33.34
Bristol Parkway [BPW]
3
1526
1527
1526
1527½
1526½
1527¼
UT
UB
38.02
Westerleigh Jn
pass
1531
pass
1531½
40.51
Chipping Sodbury
pass
1532½
pass
1533
45.15
Badminton
pass
1534½
pass
1535½
+1
50.75
Hullavington
pass
1537½
pass
1538¼
55.34
Little Somerford
pass
1540
pass
1541¼
+1
62.24
Wootton Bassett Jn
1
pass
1544
pass
1544¼
UB
UM
66.60
Rushey Platt
pass
1548
pass
1547¾
UM
UR
67.73
Swindon [SWI]
3
1550
1551
1549½
1551½
1549¾
1550¾
UR
UM
68.64
Highworth Jn
pass
1552½
pass
1552½
69.33
Swindon Stratton Green
pass
1553
pass
1553
70.45
Swindon South Marston Jn
pass
1553½
pass
1553½
72.66
Bourton
pass
1554½
pass
1555
78.57
Uffington (Oxfordshire)
pass
1558
pass
1558
81.16
Challow
pass
1559½
pass
1559
84.74
Wantage Road
1
pass
1601
pass
1601½
88.64
Steventon
pass
1603½
pass
1602¾
89.77
Milton Junction
pass
1604
pass
1603¾
91.41
Foxhall Jn [XJF]
pass
1605
pass
1604¾
91.71
Didcot West End
pass
1605½
No report
92.06
Didcot Parkway [DID]
2
pass
1605½
pass
1605½
92.30
Didcot East Jn
pass
1605½
pass
1605¾
93.59
Moreton Cutting
pass
1606½
pass
1605¾
96.59
Cholsey [CHO]
2
pass
1607½
pass
1607½
100.36
Goring & Streatley [GOR]
1
2
pass
1609½
pass
1609¼
ML
103.53
Pangbourne [PAN]
pass
1611½
pass
1611
106.44
Tilehurst [TLH]
2
pass
1613½
pass
1612¼
-1
106.62
Tilehurst East Jn.
pass
1614
pass
1612½
-1
108.46
Reading High Level Jn
pass
1615
pass
1614¼
ML
108.79
Reading Main Line West
pass
1615½
pass
1615½
109.16
Reading [RDG]
10
1616
1618
1616½
1618½
1616¼
1617½
UM
UM
109.35
Reading Main Line East
pass
1619
pass
1618¼
110.01
Kennet Bridge Jn
pass
1619½
pass
1619
113.34
Twyford West
pass
1622
pass
1621¼
114.15
Twyford [TWY]
2
pass
1622½
pass
1622
ML
115.51
Ruscombe
pass
1623
pass
1622½
120.77
Maidenhead [MAI]
2
pass
1626
pass
1625½
121.38
Maidenhead East
pass
1626½
pass
1625½
122.57
Taplow [TAP]
2
pass
1627
pass
1626¼
124.19
Burnham [BNM]
pass
1627½
pass
1626½
-1
126.05
Slough West
pass
1628½
pass
1628
126.60
Slough [SLO]
3
pass
1629
pass
1628¾
127.78
Dolphin Jn
pass
1629½
pass
1629½
128.78
Langley [LNY]
2
pass
1630
pass
1630½
130.36
Iver [IVR]
2
pass
1631
pass
1631¼
131.65
West Drayton Jcn
pass
1631½
pass
1631¾
131.79
West Drayton [WDT]
2
pass
1631½
pass
1632¼
132.29
West Drayton East
pass
1631½
pass
1632¼
133.07
Stockley Junction
pass
1632
pass
1632½
ML
ML
134.02
Heathrow Airport Jn
pass
1632½
pass
1633
134.25
Hayes & Harlington [HAY]
2
pass
1632½
pass
1633¼
135.26
Southall West Jn
pass
1633
pass
1633¾
136.10
Southall [STL]
2
pass
1633½
pass
1633½
ML
136.34
Southall East Jn
pass
1633½
pass
1633¾
137.68
Hanwell [HAN]
1
pass
1634
pass
1634¾
138.42
West Ealing Junction
pass
1634½
pass
1635¼
138.50
West Ealing [WEA]
pass
1634½
pass
1635½
+1
139.40
Ealing Broadway [EAL]
2
pass
1634½
pass
1636
+1
140.16
Acton West
1
pass
1635
pass
1636
+1
ML
ML
140.75
Acton Main Line [AML]
2
pass
1636
pass
1636¾
+1
141.43
Friars Jn
pass
1636½
No report
141.76
Old Oak Common West
pass
1637
pass
1637½
142.36
Old Oak Common East
pass
1637½
pass
1638
143.23
Ladbroke Grove
pass
1638½
pass
1639
UM
3
143.63
Portobello Jn (London)
pass
1639
pass
1640¼
+1
144.50
Royal Oak Junction
pass
1640½
pass
1641¼
3
4
145.11
London Paddington [PAD]
8
1643
1642½
1643¼
4
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