| M | Minor Delays, Today, 5:45 am Minor delays between Harrow-on-the-Hill and Watford due to train cancellations. GOOD SERVICE on the rest of the line. |
| H | Severe Delays, Today, 5:45 am Severe delays eastbound only due to train cancellations. |
| W | Planned Closure, Today, 5:45 am service operates between 06:00 and 00:30, Monday to Friday only. There is no service on Saturdays, Sundays and on bank/public holidays. |
| M | Minor Delays, Today, 5:30 am Minor delays Harrow-on-the-Hill to Watford due to train cancellations. |
| H | Severe Delays, Today, 5:30 am Severe delays eastbound only due to train cancellations. |
| W | Planned Closure, Today, 5:30 am service operates between 06:00 and 00:30, Monday to Friday only. There is no service on Saturdays, Sundays and on bank/public holidays. |
| H | Severe Delays, Today, 5:15 am Severe delays due to train cancellations. |
| W | Planned Closure, Today, 5:15 am service operates between 06:00 and 00:30, Monday to Friday only. There is no service on Saturdays, Sundays and on bank/public holidays. |
| W | Planned Closure, Today, 5:00 am service operates between 06:00 and 00:30, Monday to Friday only. There is no service on Saturdays, Sundays and on bank/public holidays. |
| W | Planned Closure, Today, 4:45 am service operates between 06:00 and 00:30, Monday to Friday only. There is no service on Saturdays, Sundays and on bank/public holidays. |
| W | Planned Closure, Today, 4:30 am service operates between 06:00 and 00:30, Monday to Friday only. There is no service on Saturdays, Sundays and on bank/public holidays. |
| B | Service Closed, Today, 4:15 am Service will resume later this morning. |
| C | Service Closed, Today, 4:15 am Service will resume later this morning. |
| D | Service Closed, Today, 4:15 am Service will resume later this morning. |
| D | Service Closed, Today, 4:15 am Service will resume later this morning. |
| E | Service Closed, Today, 4:15 am Service will resume later this morning. |
| H | Service Closed, Today, 4:15 am Service will resume later this morning. |
| L | Service Closed, Today, 4:15 am Night Overground service operates on the Windrush line between Highbury & Islington and New Cross Gate only. All other London Overground lines will resume later this morning. |
| L | Service Closed, Today, 4:15 am Night Overground service operates on the Windrush line between Highbury & Islington and New Cross Gate only. All other London Overground lines will resume later this morning. |
| M | Service Closed, Today, 4:15 am Service will resume later this morning. |
| M | Service Closed, Today, 4:15 am Night Overground service operates on the Windrush line between Highbury & Islington and New Cross Gate only. All other London Overground lines will resume later this morning. |
| S | Service Closed, Today, 4:15 am Night Overground service operates on the Windrush line between Highbury & Islington and New Cross Gate only. All other London Overground lines will resume later this morning. |
| T | Service Closed, Today, 4:15 am Service will resume later this morning. |
| W | Service Closed, Today, 4:15 am Night Overground service operates on the Windrush line between Highbury & Islington and New Cross Gate only. All other London Overground lines will resume later this morning. |
| W | Planned Closure, Today, 4:15 am service operates between 06:00 and 00:30, Monday to Friday only. There is no service on Saturdays, Sundays and on bank/public holidays. |