1223 Cambridge to Brighton
Departing on 3rd December 2025

operated by
Thameslink
12 coaches
Planned
Realtime
Location
Pl
Arr
Dep
Arr
Dep
Dly
1
1223
1222
-1
1
1237
1238
1236
1238
1
1242
1242
1242
1243
+1
1
1247
1247
1247
1248
+1
1
1250
1250
1250
1251
+1
1
1255
1255
1255
1256
+1
1
1300
1301
1300
1302
+1
2
1321
1322
1320
1322
3
1334
1334
1333
1334
2
1336
1336
1335
1336
1
1338
1339
1337
1338
-1
4
1344
1345
1342
1345
3
1358
1359
1357
1359
7
1414
1415
1412
1415
5
1419
1420
1418
1420
2
1429
1430
1427
1429
-1
2
1435
1436
1433
1436
4
1448
1450
+2