Statement Of Cash Flows [Abstract]
| Concept |
As at 2025-03-31 |
2024-04-01 to 2025-03-31 |
2023-04-01 to 2024-03-31 |
As at 2024-03-31 |
|---|---|---|---|---|
| Statement of cash flows [abstract] | ||||
| Cash flows from (used in) operating activities [abstract] | ||||
| Cash flows from (used in) operations | — |
800,903,000
GBP
|
964,859,000
GBP
|
— |
| Interest paid, classified as operating activities | — |
102,998,000
GBP
|
118,780,000
GBP
|
— |
| Income taxes paid (refund), classified as operating activities | — |
115,876,000
GBP
|
124,057,000
GBP
|
— |
| Cash flows from (used in) operating activities | — |
582,029,000
GBP
|
722,022,000
GBP
|
— |
| Cash flows from (used in) investing activities [abstract] | ||||
| Cash flows used in obtaining control of subsidiaries or other businesses, classified as investing activities | — |
167,294,000
GBP
|
288,155,000
GBP
|
— |
| Proceeds from sales of property, plant and equipment, classified as investing activities | — |
44,839,000
GBP
|
6,666,000
GBP
|
— |
| Purchase of property, plant and equipment, classified as investing activities | — |
214,295,000
GBP
|
230,354,000
GBP
|
— |
| Proceeds from government grants, classified as investing activities | — |
340,000
GBP
|
2,669,000
GBP
|
— |
| Dividends received, classified as investing activities | — |
857,000
GBP
|
1,261,000
GBP
|
— |
| Interest received, classified as investing activities | — |
11,178,000
GBP
|
15,285,000
GBP
|
— |
| Cash flows from (used in) investing activities | — |
338,139,000
GBP
|
525,294,000
GBP
|
— |
| Cash flows from (used in) financing activities [abstract] | ||||
| Proceeds from issuing shares | — |
19,000
GBP
|
221,000
GBP
|
— |
| Proceeds from borrowings, classified as financing activities | — |
809,050,000
GBP
|
–
GBP
|
— |
| Repayments of borrowings, classified as financing activities | — |
748,840,000
GBP
|
270,836,000
GBP
|
— |
| Payments of lease liabilities, classified as financing activities | — |
86,005,000
GBP
|
82,187,000
GBP
|
— |
| Cash flows from (used in) financing activities | — |
180,893,000
GBP
|
472,747,000
GBP
|
— |
| Increase (decrease) in cash and cash equivalents before effect of exchange rate changes | — |
62,997,000
GBP
|
276,019,000
GBP
|
— |
| Effect of exchange rate changes on cash and cash equivalents [abstract] | ||||
| Effect of exchange rate changes on cash and cash equivalents | — |
16,414,000
GBP
|
22,341,000
GBP
|
— |
| Cash and cash equivalents |
1,088,175,000
GBP
|
— | — |
1,109,446,000
GBP
|