IST Pilot Sites
Numbers of IST pilot sites in 2018, 2019, and 2020 are shown below.
| 2018 | 2019 | 2020 | Core | Gen | T&O | Urol | Vasc | |
| East Midlands | 3 | 3 | 6 | 2 | 2 | 2 | ||
| East of England | 4 | 14 | 14 |
8 | 3 | 3 | ||
| Kent, Surrey and Sussex | 2 | 2 | 2 | 2 | ||||
| London | 5 | 7 | 27 |
10 | 8 | 2 | 4 | 3 |
| North East | 27 |
16 | 6 | 3 | 1 | 1 | ||
| North West | 4 | 8 | 10 |
4 | 4 | 2 |
||
| South West | 1 | 2 |
3 |
2 | 1 | |||
| Thames Valley | 2 |
1 | 1 | |||||
| Wessex | 1 |
1 |
1 | |||||
| West Midlands | 10 |
6 | 2 | 1 | 1 | |||
| Yorkshire and the Humber | 4 | 9 |
9 |
5 | 3 | 1 | ||
| England (total) | 23 | 46 |
111 |
28 | 44 | 13 |
15 | 11 |
| Scotland | 49 | 46 |
53 |
39 | 10 | 3 | 1 | |
| Wales | 8 | 9 |
11 |
11 | ||||
| UK (total) | 80 | 101 |
175 |
67 | 65 | 13 | 18 | 12 |