Statement Of Financial Position [Abstract]
| Concept |
As at 2025-03-31 |
As at 2025-03-31 |
As at 2025-03-31 |
As at 2025-03-31 |
As at 2025-03-31 |
As at 2024-03-31 |
As at 2024-03-31 |
As at 2024-03-31 |
As at 2024-03-31 |
As at 2024-03-31 |
As at 2023-03-31 |
As at 2023-03-31 |
As at 2023-03-31 |
As at 2023-03-31 |
As at 2023-03-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of financial position [abstract] | |||||||||||||||
| Assets [abstract] | |||||||||||||||
| Cash and cash equivalents | — | — | — |
1,113,000
GBP
|
— | — | — | — |
261,000
GBP
|
— | — |
11,000
GBP
|
— | — | — |
| Assets | — | — | — |
1,064,875,000
GBP
|
— | — | — | — |
1,251,097,000
GBP
|
— | — | — | — | — | — |
| Equity and liabilities [abstract] | |||||||||||||||
| Equity [abstract] | |||||||||||||||
| Issued capital | — | — | — |
767,999,000
GBP
|
— | — | — | — |
767,999,000
GBP
|
— | — | — | — | — | — |
| Treasury shares | — | — | — |
63,286,000
GBP
|
— | — | — | — |
20,223,000
GBP
|
— | — | — | — | — | — |
| Equity |
91,572,000
GBP
|
767,999,000
GBP
|
256,795,000
GBP
|
1,053,080,000
GBP
|
63,286,000
GBP
|
46,328,000
GBP
|
767,999,000
GBP
|
20,223,000
GBP
|
1,238,878,000
GBP
|
444,774,000
GBP
|
463,163,000
GBP
|
1,254,655,000
GBP
|
767,999,000
GBP
|
–
GBP
|
23,493,000
GBP
|
| Liabilities [abstract] | |||||||||||||||
| Liabilities | — | — | — |
11,795,000
GBP
|
— | — | — | — |
12,219,000
GBP
|
— | — | — | — | — | — |
| Equity and liabilities | — | — | — |
1,064,875,000
GBP
|
— | — | — | — |
1,251,097,000
GBP
|
— | — | — | — | — | — |