Statement Of Cash Flows [Abstract]
| Concept |
As at 2023-03-31 |
2022-04-01 to 2023-03-31 |
2021-04-01 to 2022-03-31 |
As at 2022-03-31 |
|---|---|---|---|---|
| Statement of cash flows [abstract] | ||||
| Cash flows from (used in) operating activities [abstract] | ||||
| Cash flows from (used in) operations | — |
836,966,000
GBP
|
598,163,000
GBP
|
— |
| Interest paid, classified as operating activities | — |
82,576,000
GBP
|
70,103,000
GBP
|
— |
| Income taxes paid (refund), classified as operating activities | — |
97,485,000
GBP
|
76,292,000
GBP
|
— |
| Cash flows from (used in) operating activities | — |
656,905,000
GBP
|
451,768,000
GBP
|
— |
| Cash flows from (used in) investing activities [abstract] | ||||
| Cash flows used in obtaining control of subsidiaries or other businesses, classified as investing activities | — |
318,486,000
GBP
|
668,123,000
GBP
|
— |
| Proceeds from sales of property, plant and equipment, classified as investing activities | — |
22,643,000
GBP
|
23,524,000
GBP
|
— |
| Purchase of property, plant and equipment, classified as investing activities | — |
229,440,000
GBP
|
194,353,000
GBP
|
— |
| Proceeds from government grants, classified as investing activities | — |
216,000
GBP
|
–
GBP
|
— |
| Interest received, classified as investing activities | — |
15,535,000
GBP
|
22,759,000
GBP
|
— |
| Cash flows from (used in) investing activities | — |
531,519,000
GBP
|
867,427,000
GBP
|
— |
| Cash flows from (used in) financing activities [abstract] | ||||
| Proceeds from issuing shares | — |
348,000
GBP
|
397,000
GBP
|
— |
| Proceeds from borrowings, classified as financing activities | — |
603,054,000
GBP
|
372,426,000
GBP
|
— |
| Repayments of borrowings, classified as financing activities | — |
393,469,000
GBP
|
149,182,000
GBP
|
— |
| Payments of lease liabilities, classified as financing activities | — |
74,219,000
GBP
|
65,580,000
GBP
|
— |
| Cash flows from (used in) financing activities | — |
100,160,000
GBP
|
21,489,000
GBP
|
— |
| Increase (decrease) in cash and cash equivalents before effect of exchange rate changes | — |
25,226,000
GBP
|
394,170,000
GBP
|
— |
| Effect of exchange rate changes on cash and cash equivalents [abstract] | ||||
| Effect of exchange rate changes on cash and cash equivalents | — |
19,376,000
GBP
|
3,878,000
GBP
|
— |
| Cash and cash equivalents |
1,421,749,000
GBP
|
— | — |
1,394,272,000
GBP
|