Operators → Thameslink → 29th August 2026
Late worst first, more than 5 mins late (10 for long distance)
| Departs | Headcode | From | To | Late by | Why |
|---|---|---|---|---|---|
| 1521 | 9S43 | Cambridge | Brighton | +66 | Emergency services dealing with an incident |
| 1546 | 9T47 | Bedford | Brighton | +62 | Emergency services dealing with an incident |
| 1844 | 9S54 | Brighton | Cambridge | +19 | Emergency services dealing with an incident |
| 1216 | 9T33 | Bedford | Brighton | +15 | Urgent repairs to the railway |
| 1537 | 9V55 | St Albans City | Sutton (Surrey) | +15 | Problem currently under investigation |
| 2158 | 9T66 | Brighton | Bedford | +15 | Train ahead late |
| 1221 | 9S31 | Cambridge | Brighton | +13 | Urgent repairs to the railway |
| 1316 | 9T37 | Bedford | Brighton | +13 | Freight ahead late |
| 1516 | 9V48 | Sutton (Surrey) | St Albans City | +13 | Speed restriction |
| 1651 | 9S49 | Cambridge | Brighton | +13 | Emergency services dealing with an incident |
| 1846 | 9T59 | Bedford | Brighton | +13 | Emergency services dealing with an incident |
| 1851 | 9S57 | Cambridge | Brighton | +13 | Train ahead late |
| 2058 | 9T62 | Brighton | Bedford | +13 | Train ahead late |
| 2336 | 9W21 | Bedford | Brighton | +13 | Train ahead late |
| 1946 | 9T63 | Bedford | Brighton | +12 | Emergency services dealing with an incident |
| 2046 | 9T67 | Bedford | Brighton | +12 | Emergency services dealing with an incident |
| 0112 | 9W05 | Bedford | Three Bridges | +11 | Late from depot |
| 1916 | 9V64 | Sutton (Surrey) | St Albans City | +11 | Problem currently under investigation |
| 2052 | 9O75 | St Albans City | Sutton (Surrey) | +10 | Train ahead late |
| 0546 | 9V10 | Sutton (Surrey) | St Albans City | +8 | Problem currently under investigation |
| 1737 | 9V63 | St Albans City | Sutton (Surrey) | +8 | Problem currently under investigation |
| 1846 | 9V62 | Sutton (Surrey) | St Albans City | +8 | Train ahead late |
| 2117 | 9V72 | Sutton (Surrey) | St Albans City | +8 | Train ahead late |
| 1347 | 9P37 | Luton | Rainham (Kent) | +7 | Freight ahead late |
| 1352 | 9Y34 | Sevenoaks | London Blackfriars | +7 | Train ahead late |
| 1549 | 9O50 | Sutton (Surrey) | St Albans City | +7 | Speed restriction |
| 1647 | 9P49 | Luton | Rainham (Kent) | +7 | Train ahead late |
| 0506 | 9P02 | Gillingham (Kent) | Luton | +6 | Problem currently under investigation |
| 0847 | 9P17 | Luton | Rainham (Kent) | +6 | Police dealing with an incident |
| 1447 | 9P41 | Luton | Rainham (Kent) | +6 | Problem currently under investigation |
| 1519 | 9O48 | Sutton (Surrey) | St Albans City | +6 | Problem currently under investigation |
Cancelled reported by TRUST
| Departs | Headcode | From | To | Booked arrival | Why |
|---|---|---|---|---|---|
| 0458 | 9W11 | Gatwick Airport | Brighton | 0535 | Planned underpowered or shortformed service or vehicle |
| 0556 | 9R06 | Three Bridges | Bedford | 0809 | Planned underpowered or shortformed service or vehicle |
| 1456 | 9R42 | Three Bridges | Bedford | 1709 | Other technical failures above the Solebar |
| 1522 | 9O53 | St Albans City | Sutton (Surrey) | 1647 | Driver |
| 1551 | 9S45 | Cambridge | Brighton | 1818 | Trespass including non-intentional |
| 1616 | 9T49 | Bedford | Brighton | 1843 | Late arrival of booked inward stock |
| 1621 | 9S47 | Cambridge | Brighton | 1848 | Trespass including non-intentional |
| 1623 | 9J49 | Peterborough | Horsham | 1910 | Train cancelled or delayed at Train Operator's request |
| 1632 | 9R43 | Bedford | Three Bridges | 1840 | Trespass including non-intentional |
| 1646 | 9T51 | Bedford | Brighton | 1913 | Other technical failures above the Solebar |
| 1649 | 9O54 | Sutton (Surrey) | St Albans City | 1822 | Train-crew rostering problem |
| 1728 | 9T48 | Brighton | Bedford | 1954 | Trespass including non-intentional |
| 1732 | 9R47 | Bedford | Three Bridges | 1940 | Late arrival of booked inward stock |
| 1744 | 9S50 | Brighton | Cambridge | 2009 | Trespass including non-intentional |
| 1758 | 9T50 | Brighton | Bedford | 2024 | Trespass including non-intentional |
| 1814 | 9S52 | Brighton | Cambridge | 2039 | Trespass including non-intentional |
| 1837 | 9V67 | St Albans City | Sutton (Surrey) | 2015 | Driver |
| 1850 | 9J59 | Peterborough | Horsham | 2140 | Trespass including non-intentional |
| 1856 | 9R58 | Three Bridges | Luton | 2041 | Trespass including non-intentional |
| 1914 | 9S56 | Brighton | Cambridge | 2139 | Trespass including non-intentional |
| 1925 | 9J64 | Horsham | Peterborough | 2200 | Late arrival of booked inward stock |
| 1926 | 9R60 | Three Bridges | Luton | 2111 | Trespass including non-intentional |
| 1928 | 9T56 | Brighton | Bedford | 2154 | Other technical failures above the Solebar |
| 1951 | 9S61 | Cambridge | Brighton | 2218 | Trespass including non-intentional |
| 1955 | 9J66 | Horsham | Finsbury Park | 2122 | Trespass including non-intentional |
| 1956 | 9R62 | Three Bridges | Luton | 2141 | Late arrival of booked inward stock |
| 2016 | 9T65 | Bedford | Brighton | 2243 | Trespass including non-intentional |
| 2017 | 9V68 | Sutton (Surrey) | St Albans City | 2137 | Train-crew rostering problem |
| 2051 | 9S65 | Cambridge | Brighton | 2318 | Trespass including non-intentional |
| 2116 | 9T69 | Bedford | Brighton | 2343 | Trespass including non-intentional |
| 2129 | 9R61 | Luton | Gatwick Airport | 2305 | Trespass including non-intentional |
| 2155 | 9J74 | Horsham | London Bridge | 2313 | Late arrival of booked inward stock |
| 2253 | 9V85 | Luton | Sutton (Surrey) | 0044 | Confirmed train cab based safety system fault including GSM-R |
| 2330 | 9J71 | London Bridge | Horsham | 0044 | Trespass including non-intentional |
Part cancelled ran for only part of the journey
| Departs | Headcode | From | To | Arrived |
|---|---|---|---|---|
| 0516 | 9Y01 | London Blackfriars | Sevenoaks | 0626 |
| 0721 | 9S11 | Cambridge | Brighton | 0946 |
| 1414 | 9S36 | Brighton | Cambridge | 1642 |
| 1558 | 9T42 | Brighton | Bedford | 1823 |
| 1652 | 9O59 | St Albans City | Sutton (Surrey) | 1818 |
| 1716 | 9V56 | Sutton (Surrey) | St Albans City | 1846 |
| 1756 | 9R54 | Three Bridges | Bedford | 2003 |
| 1828 | 9T52 | Brighton | Bedford | 2139 |
| 1858 | 9T54 | Brighton | Bedford | 2129 |
| 1923 | 9J61 | Peterborough | Horsham | 2216 |
| 2152 | 9O79 | St Albans City | Sutton (Surrey) | 2316 |
| 2219 | 9O94 | Sutton (Surrey) | Bedford | 0036 |