Statement Of Comprehensive Income [Abstract]
| Concept |
2024-04-01 to 2025-03-31 |
2024-04-01 to 2025-03-31 |
2024-04-01 to 2025-03-31 |
2024-04-01 to 2025-03-31 |
2024-04-01 to 2025-03-31 |
2024-04-01 to 2025-03-31 |
2024-04-01 to 2025-03-31 |
2024-04-01 to 2025-03-31 |
2023-04-01 to 2024-03-31 |
2023-04-01 to 2024-03-31 |
2023-04-01 to 2024-03-31 |
2023-04-01 to 2024-03-31 |
2023-04-01 to 2024-03-31 |
2023-04-01 to 2024-03-31 |
2023-04-01 to 2024-03-31 |
2023-04-01 to 2024-03-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of comprehensive income [abstract] | ||||||||||||||||
| Profit (loss) |
—
GBP
|
—
GBP
|
1 50 .1
GBP
|
—
GBP
|
—
GBP
|
1 50 .1
GBP
|
—
GBP
|
1 50 .1
GBP
|
100,000
GBP
|
—
GBP
|
—
GBP
|
16 3.8
GBP
|
163,800,000
GBP
|
163,900,000
GBP
|
—
GBP
|
—
GBP
|
| Other comprehensive income [abstract] | ||||||||||||||||
| Components of other comprehensive income that will not be reclassified to profit or loss, before tax [abstract] | ||||||||||||||||
| Other comprehensive income, before tax, gains (losses) on remeasurements of defined benefit plans | — | — | — | — | — |
1 . 2
GBP
|
— | — | — | — | — | — | — |
0. 2
GBP
|
— | — |
| Other comprehensive income |
—
GBP
|
—
GBP
|
—
GBP
|
—
GBP
|
—
GBP
|
—
GBP
|
1,200,000
GBP
|
1 . 2
GBP
|
—
GBP
|
—
GBP
|
6 . 5
GBP
|
0. 2
GBP
|
6. 3
GBP
|
6 . 3
GBP
|
—
GBP
|
—
GBP
|
| Comprehensive income |
—
GBP
|
—
GBP
|
1 5 0.1
GBP
|
—
GBP
|
—
GBP
|
1 50 .1
GBP
|
1,200,000
GBP
|
148. 9
GBP
|
100,000
GBP
|
—
GBP
|
6 . 5
GBP
|
16 4.0
GBP
|
1 5 7. 5
GBP
|
1 5 7. 6
GBP
|
—
GBP
|
—
GBP
|