Statement Of Cash Flows [Abstract]
| Concept |
2021-04-01 to 2022-03-31 |
2021-04-01 to 2022-03-31 |
2021-04-01 to 2022-03-31 |
2021-04-01 to 2022-03-31 |
2021-04-01 to 2022-03-31 |
2021-04-01 to 2022-03-31 |
2021-04-01 to 2022-03-31 |
As at 2022-03-31 |
2020-04-01 to 2021-03-31 |
As at 2021-03-31 |
2020-04-01 to 2021-03-31 |
2020-04-01 to 2021-03-31 |
2020-04-01 to 2021-03-31 |
2020-04-01 to 2021-03-31 |
2020-04-01 to 2021-03-31 |
2020-04-01 to 2021-03-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of cash flows [abstract] | ||||||||||||||||
| Cash flows from (used in) operating activities [abstract] | ||||||||||||||||
| Profit (loss) |
–
GBP
|
87,200,000
GBP
|
296,500,000
GBP
|
209,300,000
GBP
|
–
GBP
|
–
GBP
|
87,200,000
GBP
|
— |
–
GBP
|
— |
219,200,000
GBP
|
7,000,000
GBP
|
–
GBP
|
–
GBP
|
212,200,000
GBP
|
212,200,000
GBP
|
| Cash flows from (used in) operations | — | — | — | — | — | — |
891,700,000
GBP
|
— | — | — | — | — | — | — | — |
901,700,000
GBP
|
| Income taxes paid (refund), classified as operating activities | — | — | — | — | — | — |
1,200,000
GBP
|
— | — | — | — | — | — | — | — |
23,200,000
GBP
|
| Cash flows from (used in) operating activities | — | — | — | — | — | — |
890,500,000
GBP
|
— | — | — | — | — | — | — | — |
878,500,000
GBP
|
| Cash flows from (used in) investing activities [abstract] | ||||||||||||||||
| Cash flows from losing control of subsidiaries or other businesses, classified as investing activities | — | — | — | — | — | — |
–
GBP
|
— | — | — | — | — | — | — | — |
700,000
GBP
|
| Proceeds from sales of property, plant and equipment, classified as investing activities | — | — | — | — | — | — |
9,500,000
GBP
|
— | — | — | — | — | — | — | — |
2,000,000
GBP
|
| Purchase of property, plant and equipment, classified as investing activities | — | — | — | — | — | — |
610,300,000
GBP
|
— | — | — | — | — | — | — | — |
613,700,000
GBP
|
| Purchase of intangible assets, classified as investing activities | — | — | — | — | — | — |
36,300,000
GBP
|
— | — | — | — | — | — | — | — |
22,200,000
GBP
|
| Interest received, classified as investing activities | — | — | — | — | — | — |
1,900,000
GBP
|
— | — | — | — | — | — | — | — |
3,700,000
GBP
|
| Cash flows from (used in) investing activities | — | — | — | — | — | — |
648,200,000
GBP
|
— | — | — | — | — | — | — | — |
631,200,000
GBP
|
| Cash flows from (used in) financing activities [abstract] | ||||||||||||||||
| Proceeds from issuing shares | — | — | — | — | — | — |
257,200,000
GBP
|
— | — | — | — | — | — | — | — |
11,800,000
GBP
|
| Proceeds from borrowings, classified as financing activities | — | — | — | — | — | — |
501,000,000
GBP
|
— | — | — | — | — | — | — | — |
415,100,000
GBP
|
| Repayments of borrowings, classified as financing activities | — | — | — | — | — | — |
488,900,000
GBP
|
— | — | — | — | — | — | — | — |
242,900,000
GBP
|
| Payments of lease liabilities, classified as financing activities | — | — | — | — | — | — |
12,100,000
GBP
|
— | — | — | — | — | — | — | — |
5,600,000
GBP
|
| Interest paid, classified as financing activities | — | — | — | — | — | — |
182,900,000
GBP
|
— | — | — | — | — | — | — | — |
185,600,000
GBP
|
| Cash flows from (used in) financing activities | — | — | — | — | — | — |
178,600,000
GBP
|
— | — | — | — | — | — | — | — |
251,900,000
GBP
|
| Increase (decrease) in cash and cash equivalents after effect of exchange rate changes | — | — | — | — | — | — |
63,700,000
GBP
|
— | — | — | — | — | — | — | — |
4,600,000
GBP
|
| Cash and cash equivalents | — | — | — | — | — | — | — |
115,400,000
GBP
|
— |
56,200,000
GBP
|
— | — | — | — | — | — |