999: On the Front Line (2017)
- Genre: Documentary
- First Air Date: 2017-09-13
- Last Air Date: 2024-02-27
- Total Seasons: 11
- Total Episodes: 97
- Status: Returning Series
- Episode Runtime: 45 min.
- Production Country: United Kingdom
- Network: Channel 4, More4
Filmed simultaneously with ambulance crews across the West Midlands, this series shows in real time the range of cases paramedics attend to.
| Title | Air Date | Duration | ||
|---|---|---|---|---|
| Season 1 | Episode 1 | Episode 1 | 2017-09-13 | 60 min |
| Season 1 | Episode 2 | Episode 2 | 2017-09-20 | 60 min |
| Season 1 | Episode 3 | Episode 3 | 2017-09-27 | 60 min |
| Season 1 | Episode 4 | Episode 4 | 2017-10-04 | 60 min |
| Season 1 | Episode 5 | Episode 5 | 2017-10-11 | 60 min |
| Season 1 | Episode 6 | Episode 6 | 2017-10-18 | 60 min |
| Season 1 | Episode 7 | Episode 7 | 2017-10-25 | 60 min |
| Season 1 | Episode 8 | Episode 8 | 2017-11-01 | 60 min |
| Season 1 | Episode 9 | Episode 9 | 2017-11-08 | 60 min |
| Season 1 | Episode 10 | Episode 10 | 2017-11-15 | 60 min |
| Season 2 | Episode 1 | Episode 1 | 2018-09-23 | 60 min |
| Season 2 | Episode 2 | Episode 2 | 2018-09-30 | 60 min |
| Season 2 | Episode 3 | Episode 3 | 2018-10-07 | 60 min |
| Season 2 | Episode 4 | Episode 4 | 2018-10-14 | 60 min |
| Season 2 | Episode 5 | Episode 5 | 2018-10-21 | 60 min |
| Season 2 | Episode 6 | Episode 6 | 2018-10-28 | 60 min |
| Season 2 | Episode 7 | Episode 7 | 2018-11-04 | 60 min |
| Season 2 | Episode 8 | Episode 8 | 2018-11-11 | 60 min |
| Season 2 | Episode 9 | Episode 9 | 2018-11-18 | 60 min |
| Season 2 | Episode 10 | Episode 10 | 2018-11-25 | 60 min |
| Season 3 | Episode 1 | Episode 1 | 2019-08-25 | 60 min |
| Season 3 | Episode 2 | Episode 2 | 2019-09-01 | 60 min |
| Season 3 | Episode 3 | Episode 3 | 2019-09-08 | 60 min |
| Season 3 | Episode 4 | Episode 4 | 2019-09-15 | 60 min |
| Season 3 | Episode 5 | Episode 5 | 2019-09-22 | 60 min |
| Season 3 | Episode 6 | Episode 6 | 2019-09-29 | 60 min |
| Season 3 | Episode 7 | Episode 7 | 2019-10-06 | 60 min |
| Season 3 | Episode 8 | Episode 8 | 2019-10-13 | 60 min |
| Season 3 | Episode 9 | Episode 9 | 2019-10-20 | 60 min |
| Season 3 | Episode 10 | Episode 10 | 2019-10-27 | 60 min |
| Season 3 | Episode 11 | Episode 11 | 2019-11-03 | 60 min |
| Season 4 | Episode 1 | Episode 1 | 2020-02-02 | 60 min |
| Season 4 | Episode 2 | Episode 2 | 2020-02-09 | 60 min |
| Season 4 | Episode 3 | Episode 3 | 2020-02-16 | 60 min |
| Season 4 | Episode 4 | Episode 4 | 2020-02-23 | 60 min |
| Season 4 | Episode 5 | Episode 5 | 2020-03-01 | 60 min |
| Season 4 | Episode 6 | Episode 6 | 2020-03-08 | 60 min |
| Season 4 | Episode 7 | Episode 7 | 2020-03-15 | 60 min |
| Season 4 | Episode 8 | Episode 8 | 2020-03-22 | 60 min |
| Season 4 | Episode 9 | Episode 9 | 2020-03-29 | 60 min |
| Season 4 | Episode 10 | Episode 10 | 2020-04-05 | 60 min |
| Season 5 | Episode 1 | Episode 1 | 2021-01-31 | 60 min |
| Season 5 | Episode 2 | Episode 2 | 2021-02-07 | 60 min |
| Season 5 | Episode 3 | Episode 3 | 2021-02-14 | 60 min |
| Season 5 | Episode 4 | Episode 4 | 2021-02-21 | 60 min |
| Season 5 | Episode 5 | Episode 5 | 2021-02-28 | 60 min |
| Season 5 | Episode 6 | Episode 6 | 2021-03-07 | 60 min |
| Season 5 | Episode 7 | Episode 7 | 2021-03-14 | 60 min |
| Season 5 | Episode 8 | Episode 8 | 2021-03-21 | 60 min |
| Season 5 | Episode 9 | Episode 9 | 2021-03-28 | 60 min |
| Season 5 | Episode 10 | Episode 10 | 2021-04-04 | 60 min |
| Season 6 | Episode 1 | Episode 1 | 2021-08-29 | 60 min |
| Season 6 | Episode 2 | Episode 2 | 2021-09-05 | 60 min |
| Season 6 | Episode 3 | Episode 3 | 2021-09-12 | 60 min |
| Season 6 | Episode 4 | Episode 4 | 2021-09-19 | 60 min |
| Season 6 | Episode 5 | Episode 5 | 2021-09-26 | 60 min |
| Season 6 | Episode 6 | Episode 6 | 2021-10-03 | 60 min |
| Season 6 | Episode 7 | Episode 7 | 2021-10-10 | 60 min |
| Season 6 | Episode 8 | Episode 8 | 2021-10-17 | 60 min |
| Season 6 | Episode 9 | Episode 9 | 2021-10-24 | 60 min |
| Season 6 | Episode 10 | Episode 10 | 2021-10-31 | 60 min |
| Season 7 | Episode 1 | Episode 1 | 2021-11-07 | 60 min |
| Season 7 | Episode 2 | Episode 2 | 2021-11-14 | 60 min |
| Season 7 | Episode 3 | Episode 3 | 2021-11-21 | 60 min |
| Season 7 | Episode 4 | Episode 4 | 2021-11-28 | 60 min |
| Season 7 | Episode 5 | Episode 5 | 2021-12-05 | 60 min |
| Season 7 | Episode 6 | Episode 6 | 2021-12-12 | 60 min |
| Season 7 | Episode 7 | Episode 7 | 2021-12-19 | 60 min |
| Season 7 | Episode 8 | Episode 8 | 2022-01-02 | 60 min |
| Season 7 | Episode 9 | Episode 9 | 2022-01-09 | 60 min |
| Season 7 | Episode 10 | Episode 10 | 2022-01-16 | 60 min |
| Season 8 | Episode 1 | Episode 1 | 2022-09-25 | 60 min |
| Season 8 | Episode 2 | Episode 2 | 2022-10-02 | 60 min |
| Season 8 | Episode 3 | Episode 3 | 2022-10-09 | 60 min |
| Season 8 | Episode 4 | Episode 4 | 2022-10-16 | 60 min |
| Season 8 | Episode 5 | Episode 5 | 2022-10-23 | 60 min |
| Season 8 | Episode 6 | Episode 6 | 2022-10-30 | 60 min |
| Season 8 | Episode 7 | Episode 7 | 2022-11-06 | 60 min |
| Season 8 | Episode 8 | Episode 8 | 2022-11-13 | 60 min |
| Season 8 | Episode 9 | Episode 9 | 2022-11-20 | 60 min |
| Season 8 | Episode 10 | Episode 10 | 2022-11-27 | 60 min |
| Season 9 | Episode 1 | Episode 1 | 2023-03-26 | 60 min |
| Season 9 | Episode 2 | Episode 2 | 2023-04-02 | 60 min |
| Season 9 | Episode 3 | Episode 3 | 2023-04-09 | 60 min |
| Season 9 | Episode 4 | Episode 4 | 2023-04-16 | 60 min |
| Season 9 | Episode 5 | Episode 5 | 2023-04-23 | 60 min |
| Season 9 | Episode 6 | Episode 6 | 2023-04-30 | 60 min |
| Season 9 | Episode 7 | Episode 7 | 2023-05-07 | 60 min |
| Season 9 | Episode 8 | Episode 8 | 2023-05-14 | 60 min |
| Season 9 | Episode 9 | Episode 9 | 2023-05-21 | 60 min |
| Season 10 | Episode 1 | Episode 1 | 2024-01-30 | 60 min |
| Season 10 | Episode 2 | Episode 2 | 2024-02-06 | 60 min |
| Season 10 | Episode 3 | Episode 3 | 2024-02-13 | 60 min |
| Season 10 | Episode 4 | Episode 4 | 2024-02-20 | 60 min |
| Season 10 | Episode 5 | Episode 5 | 2024-02-27 | 60 min |
| Season 11 | Episode 1 | Episode 1 | 2024-05-05 | 60 min |
| Season 11 | Episode 2 | Episode 2 | 2024-05-12 | 60 min |
| Season 11 | Episode 3 | Episode 3 | 2024-05-19 | 60 min |