
2010 – 2020
76 Episodes
45 min
| Ep 1 | Ep 2 | Ep 3 | Ep 4 | Ep 5 | Ep 6 | Ep 7 | Ep 8 | Ep 9 | Ep 10 | |
|---|---|---|---|---|---|---|---|---|---|---|
| S1 | 8.1 | 8.3 | 6.9 | 8.2 | 8.1 | 8.2 | ||||
| S2 | 6.6 | 6.3 | 7.0 | 6.4 | 6.9 | 8.4 | 6.3 | 6.8 | 6.4 | 8.1 |
| S3 | 6.0 | 7.8 | 6.1 | 6.3 | 6.4 | 6.1 | 6.4 | 8.0 | 8.6 | 8.6 |
| S4 | 6.9 | 6.7 | 6.6 | 6.7 | 6.6 | 6.7 | 7.0 | 6.7 | 8.5 | 7.1 |
| S5 | 8.2 | 8.2 | 6.9 | 9.0 | 8.7 | 8.4 | 6.9 | 8.3 | 7.9 | 7.0 |
| S6 | 7.8 | 7.7 | 7.2 | 7.4 | 7.4 | 7.5 | 5.9 | 7.2 | 7.8 | 7.5 |
| S7 | 5.2 | 9.5 | 9.5 | 9.5 | 5.6 | 9.5 | 9.5 | 9.5 | 9.5 | 9.5 |
| S8 | 9.5 | 9.5 | 6.7 | 9.5 | 9.5 | 6.2 | 9.5 | 9.5 | 9.0 | 9.0 |
The series follows John Porter, a former British Special Forces soldier, who is drafted back into service by Section 20, a fictional branch of the Secret Intelligence Service.