Profit Or Loss [Abstract]
| Concept |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
|---|---|---|---|---|---|---|
| Profit or loss [abstract] | ||||||
| Profit (loss) [abstract] | ||||||
| Revenue |
4,873,800,000
GBP
|
—
GBP
|
4,873,800,000
GBP
|
4,534,000,000
GBP
|
—
GBP
|
4,534,000,000
GBP
|
| Profit (loss) from operating activities |
271,600,000
GBP
|
22,900,000
GBP
|
248,700,000
GBP
|
217,200,000
GBP
|
19,800,000
GBP
|
237,000,000
GBP
|
| Finance costs |
31,600,000
GBP
|
—
GBP
|
31,600,000
GBP
|
25,100,000
GBP
|
—
GBP
|
25,100,000
GBP
|
| Share of profit (loss) of associates and joint ventures accounted for using equity method |
29,000,000
GBP
|
—
GBP
|
29,000,000
GBP
|
12,000,000
GBP
|
—
GBP
|
12,000,000
GBP
|
| Profit (loss) before tax |
247,000,000
GBP
|
22,900,000
GBP
|
224,100,000
GBP
|
196,800,000
GBP
|
19,800,000
GBP
|
216,600,000
GBP
|
| Tax expense (income) |
44,600,000
GBP
|
6,200,000
GBP
|
50,800,000
GBP
|
41,800,000
GBP
|
6,100,000
GBP
|
47,900,000
GBP
|
| Profit (loss) |
202,400,000
GBP
|
29,100,000
GBP
|
173,300,000
GBP
|
155,000,000
GBP
|
13,700,000
GBP
|
168,700,000
GBP
|
| Profit (loss), attributable to [abstract] | ||||||
| Profit (loss), attributable to owners of parent |
202,400,000
GBP
|
29,100,000
GBP
|
173,300,000
GBP
|
155,400,000
GBP
|
13,700,000
GBP
|
169,100,000
GBP
|
| Profit (loss), attributable to non-controlling interests |
—
GBP
|
—
GBP
|
—
GBP
|
400,000
GBP
|
—
GBP
|
400,000
GBP
|
| Earnings per share [text block] | — | — | — | — | — | — |
| Earnings per share [abstract] | ||||||
| Earnings per share [line items] | ||||||
| Basic earnings per share [abstract] | ||||||
| Basic earnings (loss) per share |
0.1823
|
— |
0.1561
|
0.1303
|
— |
0.1418
|
| Diluted earnings per share [abstract] | ||||||
| Diluted earnings (loss) per share |
0.1793
|
— |
0.1536
|
0.1279
|
— |
0.1392
|