Statement Of Cash Flows [Abstract]
| Concept |
2022-01-01 to 2022-12-31 |
2021-01-01 to 2021-12-31 |
|---|---|---|
| Statement of cash flows [abstract] | ||
| Cash flows from (used in) operating activities [abstract] | ||
| Cash flows from (used in) operations before changes in working capital |
423,000,000
GBP
|
391,000,000
GBP
|
| Adjustments for decrease (increase) in trade and other receivables |
56,300,000
GBP
|
71,300,000
GBP
|
| Adjustments for increase (decrease) in trade and other payables |
23,500,000
GBP
|
59,500,000
GBP
|
| Adjustments for increase (decrease) in employee benefit liabilities |
5,300,000
GBP
|
7,600,000
GBP
|
| Adjustments for depreciation and amortisation expense and impairment loss (reversal of impairment loss) recognised in profit or loss |
81,000,000
GBP
|
69,000,000
GBP
|
| Adjustments for gain (loss) on disposal of investments in subsidiaries, joint ventures and associates |
7,000,000
GBP
|
–
GBP
|
| Cash flows from (used in) investing activities [abstract] | ||
| Payments for development project expenditure |
4,300,000
GBP
|
3,200,000
GBP
|