Operators → Thameslink → 15th September 2026
Late worst first, more than 5 mins late (10 for long distance)
| Departs | Headcode | From | To | Late by | Why |
|---|---|---|---|---|---|
| 0521 | 9S03 | Cambridge | Brighton | +29 | Points failure |
| 2151 | 9S69 | Cambridge | Brighton | +28 | Animals on the railway |
| 0523 | 9J05 | Peterborough | Horsham | +27 | Points failure |
| 0730 | 9Y13 | Welwyn Garden City | Sevenoaks | +27 | Points failure |
| 1514 | 9S40 | Brighton | Cambridge | +27 | Earlier train fault |
| 0623 | 9J09 | Peterborough | Horsham | +26 | Points failure |
| 1444 | 9S38 | Brighton | Cambridge | +24 | Fault on a train |
| 1654 | 9J54 | Horsham | Peterborough | +22 | Speed restriction |
| 2128 | 9T64 | Brighton | Bedford | +18 | Speed restriction |
| 2306 | 9W19 | Bedford | Three Bridges | +18 | Freight ahead late |
| 0653 | 9J11 | Peterborough | Horsham | +17 | Points failure |
| 1914 | 9S56 | Brighton | Cambridge | +17 | Animals on the railway |
| 0809 | 9S12 | Brighton | Cambridge | +16 | Signalling fault |
| 1214 | 9S28 | Brighton | Cambridge | +16 | Points failure |
| 1732 | 9Y53 | Welwyn Garden City | Sevenoaks | +16 | Passengers causing a disturbance on a train |
| 0651 | 9S09 | Cambridge | Brighton | +15 | Points failure |
| 0821 | 9S15 | Cambridge | Brighton | +15 | Train crew being delayed |
| 0609 | 9S04 | Brighton | Cambridge | +14 | Points failure |
| 0656 | 9T82 | Brighton | Bedford | +14 | Problem currently under investigation |
| 0932 | 9R15 | Bedford | Three Bridges | +14 | Fault on a train |
| 1737 | 9V63 | St Albans City | Sutton (Surrey) | +14 | Speed restriction |
| 1821 | 9S55 | Cambridge | Brighton | +14 | Earlier train fault |
| 0921 | 9S19 | Cambridge | Brighton | +13 | Fault on a train |
| 0751 | 9S13 | Cambridge | Brighton | +12 | Points failure |
| 1926 | 9R60 | Three Bridges | Luton | +12 | Speed restriction |
| 2029 | 9R57 | Luton | Gatwick Airport | +12 | Track inspection |
| 0551 | 9S05 | Cambridge | Brighton | +11 | Points failure |
| 0746 | 9T15 | Bedford | Brighton | +11 | Points failure |
| 0916 | 9T21 | Bedford | Brighton | +11 | Train fault |
| 1850 | 9S57 | Cambridge | Brighton | +11 | Fault with the signalling system |
| 0847 | 9P17 | Luton | Rainham (Kent) | +10 | Points failure |
| 1047 | 9P25 | Luton | Rainham (Kent) | +9 | Person being hit by a train |
| 1147 | 9P29 | Luton | Rainham (Kent) | +9 | Person being hit by a train |
| 1717 | 9P51 | Luton | Rainham (Kent) | +9 | Problem currently under investigation |
| 0649 | 9O14 | Sutton (Surrey) | St Albans City | +8 | Points failure |
| 1652 | 9Y94 | Sevenoaks | Welwyn Garden City | +8 | Train crew being delayed |
| 1816 | 9V60 | Sutton (Surrey) | St Albans City | +8 | Speed restriction |
| 2119 | 9O90 | Sutton (Surrey) | Bedford | +8 | Problem currently under investigation |
| 0800 | 9Y15 | Welwyn Garden City | Sevenoaks | +7 | Points failure |
| 1819 | 9O60 | Sutton (Surrey) | St Albans City | +7 | Speed restriction |
| 0747 | 9P13 | Luton | Rainham (Kent) | +6 | Points failure |
| 0949 | 9O26 | Sutton (Surrey) | St Albans City | +6 | Points failure |
| 1247 | 9P33 | Luton | Rainham (Kent) | +6 | Person being hit by a train |
| 1622 | 9Y92 | Sevenoaks | Welwyn Garden City | +6 | Signalling fault |
| 1702 | 9Y51 | Welwyn Garden City | Sevenoaks | +6 | Passengers causing a disturbance on a train |
| 1802 | 9Y55 | Welwyn Garden City | Sevenoaks | +6 | Signalling fault |
| 2019 | 9O68 | Sutton (Surrey) | St Albans City | +6 | Speed restriction |
Cancelled reported by TRUST
| Departs | Headcode | From | To | Booked arrival | Why |
|---|---|---|---|---|---|
| 0500 | 9K02 | Orpington | Luton | 0647 | Other technical failures above the Solebar |
| 0551 | 9P03 | West Hampstead Thameslink | Rainham (Kent) | 0747 | Train-crew rostering problem |
| 0617 | 1P06 | London King's Cross | Peterborough | 0740 | Driver |
| 0652 | 9O19 | St Albans City | Sutton (Surrey) | 0817 | OHLE/3rd rail power supply failure or reduction |
| 0700 | 9R05 | Bedford | Three Bridges | 0916 | Train-crew rostering problem |
| 0701 | 9K11 | Luton | Orpington | 0845 | Confirmed train cab based safety system fault including GSM-R |
| 0900 | 9K78 | Orpington | West Hampstead Thameslink | 1006 | Confirmed train cab based safety system fault including GSM-R |
| 0926 | 9R20 | Three Bridges | Bedford | 1139 | Train-crew rostering problem |
| 1102 | 9R21 | Bedford | Three Bridges | 1310 | Train-crew rostering problem |
| 1319 | 9O40 | Sutton (Surrey) | St Albans City | 1452 | Train-crew rostering problem |
| 1326 | 9R36 | Three Bridges | Bedford | 1539 | Train-crew rostering problem |
| 1507 | 9V53 | St Albans City | Sutton (Surrey) | 1644 | Train-crew rostering problem |
| 1653 | 9T44 | Gatwick Airport | Bedford | 1841 | Animal Strike or Incursion within the control of Network Rail |
| 1902 | 9R53 | Bedford | Gatwick Airport | 2105 | Animal Strike or Incursion within the control of Network Rail |
Part cancelled ran for only part of the journey
| Departs | Headcode | From | To | Arrived |
|---|---|---|---|---|
| 0558 | 9P87 | Bedford | Rainham (Kent) | no report |
| 0621 | 9P05 | West Hampstead Thameslink | Rainham (Kent) | no report |
| 0630 | 9P08 | Rainham (Kent) | Luton | 0909 |
| 0630 | 9Y09 | Welwyn Garden City | Sevenoaks | 0846 |
| 0700 | 9Y11 | Welwyn Garden City | Sevenoaks | 0918 |
| 0721 | 9S11 | Cambridge | Brighton | no report |
| 0753 | 9J15 | Peterborough | Horsham | 1045 |
| 0755 | 9J18 | Horsham | Peterborough | 1046 |
| 0800 | 9P14 | Rainham (Kent) | Luton | 1032 |
| 0817 | 9P15 | Luton | Rainham (Kent) | no report |
| 0819 | 9O20 | Sutton (Surrey) | St Albans City | 1001 |
| 0824 | 9J20 | Horsham | Peterborough | 1121 |
| 0830 | 9P16 | Rainham (Kent) | Luton | 1103 |
| 0900 | 9P18 | Rainham (Kent) | Luton | 1131 |
| 0925 | 9J24 | Horsham | Peterborough | 1215 |
| 0944 | 9S18 | Brighton | Cambridge | no report |
| 1007 | 9V33 | St Albans City | Sutton (Surrey) | 1144 |
| 1014 | 9S20 | Brighton | Cambridge | 1242 |
| 1100 | 9P26 | Rainham (Kent) | Luton | 1323 |
| 1152 | 9O39 | St Albans City | Sutton (Surrey) | no report |
| 1222 | 9S31 | Cambridge | Brighton | 1448 |
| 1344 | 9S34 | Brighton | Cambridge | 1613 |
| 1451 | 9S41 | Cambridge | Brighton | 1745 |
| 1602 | 9R41 | Bedford | Three Bridges | no report |
| 1646 | 9V54 | Sutton (Surrey) | St Albans City | 1806 |
| 1651 | 9S49 | Cambridge | Brighton | no report |
| 1653 | 9J51 | Peterborough | Horsham | 1955 |
| 1702 | 9R45 | Bedford | Three Bridges | 1924 |
| 1721 | 9S51 | Cambridge | Brighton | 2001 |
| 1732 | 9R47 | Bedford | Three Bridges | 1951 |
| 1744 | 9S50 | Brighton | Cambridge | no report |
| 1751 | 9S53 | Cambridge | Brighton | 2036 |
| 1826 | 9R56 | Three Bridges | Luton | 2039 |
| 1855 | 9J62 | Horsham | Peterborough | 2151 |
| 1916 | 9V64 | Sutton (Surrey) | St Albans City | 2047 |
| 1955 | 9J66 | Horsham | Peterborough | 2237 |
| 2052 | 9O75 | St Albans City | Sutton (Surrey) | 2214 |
Did not reach the last stop reported, then no arrival
| Departs | Headcode | From | To | Last reported |
|---|---|---|---|---|
| 1925 | 9J64 | Horsham | Peterborough |