Operators → Thameslink → 21st September 2026
Late worst first, more than 5 mins late (10 for long distance)
| Departs | Headcode | From | To | Late by | Why |
|---|---|---|---|---|---|
| 0342 | 9W15 | Bedford | Brighton | +40 | Fault on a train |
| 0839 | 9S14 | Brighton | Cambridge | +26 | Train ahead late |
| 1637 | 9V59 | St Albans City | Sutton (Surrey) | +22 | Passenger being taken ill on a train |
| 0721 | 9S11 | Cambridge | Brighton | +20 | Train ahead late |
| 1614 | 9S44 | Brighton | Cambridge | +20 | Speed restriction |
| 1902 | 9R53 | Bedford | Gatwick Airport | +19 | Passenger being taken ill on a train |
| 0654 | 9J14 | Horsham | Peterborough | +18 | Speed restriction |
| 1407 | 9V49 | St Albans City | Sutton (Surrey) | +18 | Passenger being taken ill on a train |
| 0516 | 9Y01 | London Blackfriars | Sevenoaks | +16 | Late from depot |
| 0420 | 9V11 | Luton | Sutton (Surrey) | +14 | Fault on a train |
| 0709 | 9S08 | Brighton | Cambridge | +14 | Broken down train |
| 0537 | 9L01 | London Bridge | East Grinstead | +13 | not given |
| 1451 | 9S41 | Cambridge | Brighton | +13 | Police dealing with an incident near the railway |
| 0917 | 9P19 | Luton | Rainham (Kent) | +12 | Fault on a train |
| 1100 | 9P26 | Rainham (Kent) | Luton | +12 | Emergency services dealing with an incident near the railway |
| 1200 | 9P30 | Rainham (Kent) | Luton | +12 | Passenger being taken ill on a train |
| 1249 | 9O38 | Sutton (Surrey) | St Albans City | +12 | Passenger being taken ill on a train |
| 1644 | 9S46 | Brighton | Cambridge | +12 | Speed restriction |
| 1852 | 9J59 | Peterborough | Horsham | +12 | Fault with barriers at a level crossing |
| 2214 | 9S68 | Brighton | Cambridge | +12 | Train ahead late |
| 0412 | 9T01 | Bedford | Brighton | +11 | Fault on a train |
| 0746 | 9V18 | Sutton (Surrey) | St Albans City | +11 | Broken down train |
| 1114 | 9S24 | Brighton | Cambridge | +11 | Operational incident |
| 1744 | 9S50 | Brighton | Cambridge | +11 | Speed restriction |
| 1819 | 9O60 | Sutton (Surrey) | St Albans City | +11 | Passenger being taken ill on a train |
| 1916 | 9T61 | Bedford | Brighton | +11 | Speed restriction |
| 2116 | 9T69 | Bedford | Brighton | +11 | not given |
| 1422 | 9O49 | St Albans City | Sutton (Surrey) | +10 | Passenger being taken ill on a train |
| 1737 | 9V63 | St Albans City | Sutton (Surrey) | +10 | Passenger being taken ill on a train |
| 2254 | 9Z85 | Luton | St Pancras International | +9 | Train ahead late |
| 2022 | 9Y60 | Sevenoaks | London Blackfriars | +8 | Problem currently under investigation |
| 2222 | 9Z81 | St Albans City | Herne Hill | +8 | Train ahead late |
| 0747 | 9P13 | Luton | Rainham (Kent) | +7 | Broken down train |
| 0922 | 9O29 | St Albans City | Sutton (Surrey) | +7 | Broken down train |
| 0949 | 9O26 | Sutton (Surrey) | St Albans City | +7 | Speed restriction |
| 1417 | 9P39 | Luton | Rainham (Kent) | +7 | Passenger being taken ill on a train |
| 1552 | 9Y90 | Sevenoaks | Welwyn Garden City | +7 | Passenger being taken ill on a train |
| 1846 | 9V62 | Sutton (Surrey) | St Albans City | +7 | Passenger being taken ill on a train |
| 1919 | 9O64 | Sutton (Surrey) | St Albans City | +7 | Speed restriction |
| 0600 | 9A93 | Dartford | Rainham (Kent) | +6 | Broken down train |
| 0632 | 9V17 | West Hampstead Thameslink | Sutton (Surrey) | +6 | Broken down train |
| 1017 | 9P23 | Luton | Rainham (Kent) | +6 | Earlier train fault |
| 1049 | 9O30 | Sutton (Surrey) | St Albans City | +6 | Broken down train |
| 1137 | 9V39 | St Albans City | Sutton (Surrey) | +6 | Broken down train |
| 1146 | 9V34 | Sutton (Surrey) | St Albans City | +6 | Emergency services dealing with an incident near the railway |
| 1319 | 9O40 | Sutton (Surrey) | St Albans City | +6 | Passenger being taken ill on a train |
| 1449 | 9O46 | Sutton (Surrey) | St Albans City | +6 | Passenger being taken ill on a train |
| 1717 | 9P51 | Luton | Rainham (Kent) | +6 | Defective track |
| 2022 | 9O73 | St Albans City | Sutton (Surrey) | +6 | Passenger being taken ill on a train |
| 2330 | 9A96 | Rainham (Kent) | Dartford | +6 | not given |
Cancelled reported by TRUST
| Departs | Headcode | From | To | Booked arrival | Why |
|---|---|---|---|---|---|
| 0214 | 9W09 | Bedford | Three Bridges | 0436 | Points failure (including no fault found) |
| 0536 | 9K03 | West Hampstead Thameslink | Orpington | 0645 | Diesel loco failure, defect, attention |
| 0543 | 9L81 | Bedford | East Grinstead | 0731 | Points failure (including no fault found) |
| 0555 | 9L03 | St Pancras International | East Grinstead | 0659 | Diesel loco failure, defect, attention |
| 0556 | 9K07 | Luton | Orpington | 0745 | Diesel loco failure, defect, attention |
| 0600 | 9K06 | Orpington | Luton | 0750 | Other FOC causes including mishaps |
| 0606 | 9K05 | West Hampstead Thameslink | Orpington | 0715 | Diesel loco failure, defect, attention |
| 0630 | 9K08 | Orpington | Luton | 0820 | Diesel loco failure, defect, attention |
| 0631 | 9K09 | Luton | Orpington | 0815 | Diesel loco failure, defect, attention |
| 0652 | 9O19 | St Albans City | Sutton (Surrey) | 0817 | Points failure (including no fault found) |
| 0700 | 9K80 | Orpington | West Hampstead Thameslink | 0807 | Diesel loco failure, defect, attention |
| 0701 | 9K11 | Luton | Orpington | 0845 | Late arrival of booked inward stock |
| 0703 | 9L87 | Bedford | East Grinstead | 0859 | Diesel loco failure, defect, attention |
| 0730 | 9K12 | Orpington | Luton | 0920 | Diesel loco failure, defect, attention |
| 0731 | 9K13 | Luton | Elephant & Castle | 0831 | Diesel loco failure, defect, attention |
| 0800 | 9K14 | Orpington | Luton | 0950 | Other FOC causes including mishaps |
| 0801 | 9K15 | Luton | Orpington | 0945 | Diesel loco failure, defect, attention |
| 0819 | 9O20 | Sutton (Surrey) | St Albans City | 0952 | Points failure (including no fault found) |
| 0830 | 9K76 | Orpington | West Hampstead Thameslink | 0936 | Diesel loco failure, defect, attention |
| 0831 | 9K17 | Luton | Elephant & Castle | 0931 | Diesel loco failure, defect, attention |
| 0900 | 9K78 | Orpington | West Hampstead Thameslink | 1006 | Other FOC causes including mishaps |
| 0914 | 9L88 | East Grinstead | London Bridge | 1010 | Other FOC causes including mishaps |
| 1022 | 9T89 | London Bridge | Three Bridges | 1100 | Other FOC causes including mishaps |
| 1832 | 9R51 | Bedford | Three Bridges | 2040 | Driver |
| 1958 | 9T58 | Brighton | Bedford | 2224 | Train-crew rostering problem |
| 2056 | 9R66 | Three Bridges | Bedford | 2308 | Driver |
| 2244 | 9N17 | Bedford | Brighton | 0124 | Train-crew rostering problem |
Part cancelled ran for only part of the journey
| Departs | Headcode | From | To | Arrived |
|---|---|---|---|---|
| 0314 | 9W13 | Bedford | Brighton | no report |
| 0430 | 9K00 | Orpington | Luton | 0618 |
| 0500 | 9K02 | Orpington | Luton | no report |
| 0546 | 9V10 | Sutton (Surrey) | St Albans City | 0707 |
| 0616 | 9V12 | Sutton (Surrey) | St Albans City | 0736 |
| 0626 | 9T80 | Brighton | Bedford | 0850 |
| 0639 | 9S06 | Brighton | Cambridge | 0930 |
| 0653 | 9J11 | Peterborough | Horsham | no report |
| 0714 | 9L06 | East Grinstead | Bedford | 0947 |
| 0724 | 9J16 | Horsham | Peterborough | 1031 |
| 0744 | 9L08 | East Grinstead | Bedford | 0957 |
| 0921 | 9S19 | Cambridge | Brighton | 1159 |
| 0955 | 9J26 | Horsham | Peterborough | 1237 |
| 1121 | 9S27 | Cambridge | Brighton | 1405 |
| 1149 | 9O34 | Sutton (Surrey) | St Albans City | 1352 |
| 1207 | 9V41 | St Albans City | Sutton (Surrey) | no report |
| 1216 | 9V36 | Sutton (Surrey) | St Albans City | 1401 |
| 1219 | 9O36 | Sutton (Surrey) | St Albans City | no report |
| 1246 | 9V38 | Sutton (Surrey) | St Albans City | 1419 |
| 1252 | 9O43 | St Albans City | Sutton (Surrey) | no report |
| 1337 | 9V47 | St Albans City | Sutton (Surrey) | 1518 |
| 1346 | 9V42 | Sutton (Surrey) | St Albans City | 1509 |
| 1352 | 9O47 | St Albans City | Sutton (Surrey) | 1515 |
| 1419 | 9O44 | Sutton (Surrey) | St Albans City | 1555 |
| 1446 | 9T43 | Bedford | Brighton | 1722 |
| 1546 | 9V50 | Sutton (Surrey) | St Albans City | 1707 |
| 1549 | 9O50 | Sutton (Surrey) | St Albans City | 1725 |
| 1716 | 9T53 | Bedford | Brighton | no report |
| 1816 | 9V60 | Sutton (Surrey) | St Albans City | 1937 |
| 1823 | 9J57 | Peterborough | Horsham | no report |
| 1850 | 9S57 | Cambridge | Brighton | 2136 |
| 1916 | 9V64 | Sutton (Surrey) | St Albans City | 2045 |
| 2107 | 9V77 | St Albans City | Sutton (Surrey) | 2251 |
| 2125 | 9J72 | Horsham | Peterborough | 0006 |
| 2155 | 9J74 | Horsham | Peterborough | 0039 |