Revenue, operating profit and segment analysis - Additional information (Details) £ in Millions |
12 Months Ended | ||
|---|---|---|---|
|
Dec. 31, 2025
GBP (£)
segment
|
Dec. 31, 2024
GBP (£)
|
Dec. 31, 2023
GBP (£)
|
|
| Disclosure of operating segments | |||
| Number of operating segments | segment | 4 | ||
| Aggregate amount of transaction price for performance obligations not yet delivered | £ 35 | £ 55 | |
| Revenue recognition period | 2 years | ||
| Share of results of joint ventures and associates | £ 44 | 43 | £ 46 |
| Risk | |||
| Disclosure of operating segments | |||
| Share of results of joint ventures and associates | (1) | 0 | (1) |
| Scientific, Technical & Medical | |||
| Disclosure of operating segments | |||
| Share of results of joint ventures and associates | 1 | 0 | 0 |
| Legal | |||
| Disclosure of operating segments | |||
| Share of results of joint ventures and associates | 6 | 7 | 10 |
| Exhibitions | |||
| Disclosure of operating segments | |||
| Share of results of joint ventures and associates | £ 38 | £ 36 | £ 37 |