Statement Of Cash Flows [Abstract]
| Concept |
2021-01-01 to 2021-12-31 |
2020-01-01 to 2020-12-31 |
|---|---|---|
| Statement of cash flows [abstract] | ||
| Cash flows from (used in) operating activities [abstract] | ||
| Adjustments for finance income (cost) |
7,200,000
GBP
|
5,900,000
GBP
|
| Adjustments for decrease (increase) in trade and other receivables |
238,500,000
GBP
|
48,300,000
GBP
|
| Adjustments for increase (decrease) in trade and other payables |
292,900,000
GBP
|
26,200,000
GBP
|
| Adjustments for amortisation expense |
15,300,000
GBP
|
14,600,000
GBP
|
| Adjustments for gain (loss) on disposals, property, plant and equipment |
1,300,000
GBP
|
200,000
GBP
|
| Cash flows from (used in) financing activities [abstract] | ||
| Dividends paid to equity holders of parent, classified as financing activities |
62,400,000
GBP
|
13,900,000
GBP
|