Analysis Of Income And Expense [Abstract]
| Concept |
2023-01-01 to 2023-12-31 |
2022-01-01 to 2022-12-31 |
|---|---|---|
| Analysis of income and expense [abstract] | ||
| Material income and expense [abstract] | ||
| Gains (losses) on disposals of investments [abstract] | ||
| Gains on disposals of investments |
1,200,000
GBP
|
25,600,000
GBP
|
| Revenue and other operating income |
265,900,000
GBP
|
248,800,000
GBP
|
| Gains (losses) on change in fair value of derivatives [abstract] | ||
| Gains (losses) on change in fair value of derivatives |
2,100,000
GBP
|
5,800,000
GBP
|
| Share of profit (loss) of associates and joint ventures accounted for using equity method [abstract] | ||
| Share of profit (loss) of joint ventures accounted for using equity method |
7,200,000
GBP
|
7,300,000
GBP
|
| Comprehensive income, continuing and discontinued operations [abstract] | ||
| Comprehensive income |
480,000,000
GBP
|
282,000,000
GBP
|