Statement Of Cash Flows [Abstract]
| Concept |
2023-01-01 to 2023-12-31 |
2022-01-01 to 2022-12-31 |
|---|---|---|
| Statement of cash flows [abstract] | ||
| Cash flows from (used in) operating activities [abstract] | ||
| Adjustments for finance income |
1 0. 5
GBP
|
1 . 9
GBP
|
| Adjustments for amortisation expense |
4,800,000
GBP
|
4 .1
GBP
|
| Adjustments for depreciation expense |
14 .7
GBP
|
13 .7
GBP
|
| Adjustments for gain (loss) on disposals, property, plant and equipment |
3. 6
GBP
|
1. 5
GBP
|
| Cash flows from (used in) investing activities [abstract] | ||
| Purchase of investments other than investments accounted for using equity method |
0. 3
GBP
|
0 . 6
GBP
|
| Proceeds from sales of investments other than investments accounted for using equity method |
0. 3
GBP
|
1 .0
GBP
|
| Purchase of financial instruments, classified as investing activities |
3 6. 8
GBP
|
0 . 3
GBP
|
| Proceeds from sales or maturity of financial instruments, classified as investing activities |
–
GBP
|
6,800,000
GBP
|
| Cash flows from (used in) financing activities [abstract] | ||
| Dividends paid to equity holders of parent, classified as financing activities |
2 8. 3
GBP
|
25 . 9
GBP
|
| Dividends paid to non-controlling interests, classified as financing activities |
1 .1
GBP
|
4 . 3
GBP
|