Analysis Of Income And Expense [Abstract]
| Concept |
2022-04-01 to 2023-03-31 |
2022-04-01 to 2023-03-31 |
2022-04-01 to 2023-03-31 |
2022-04-01 to 2023-03-31 |
2022-04-01 to 2023-03-31 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|
| Analysis of income and expense [abstract] | ||||||||||
| Revenue [abstract] | ||||||||||
| Revenue | — | — | — | — |
2,165,100,000
GBP
|
— | — | — | — |
1,943,300,000
GBP
|
| Material income and expense [abstract] | ||||||||||
| Finance income (cost) | — | — | — | — |
362,600,000
GBP
|
— | — | — | — |
269,400,000
GBP
|
| Operating expense | — | — | — | — |
1,656,300,000
GBP
|
— | — | — | — |
1,442,400,000
GBP
|
| Share of profit (loss) of associates and joint ventures accounted for using equity method [abstract] | ||||||||||
| Share of profit (loss) of joint ventures accounted for using equity method | — | — | — | — |
–
GBP
|
— | — | — | — |
2,200,000
GBP
|
| Comprehensive income, continuing and discontinued operations [abstract] | ||||||||||
| Comprehensive income |
1,900,000
GBP
|
–
GBP
|
–
GBP
|
57,000,000
GBP
|
55,100,000
GBP
|
–
GBP
|
62,600,000
GBP
|
46,700,000
GBP
|
–
GBP
|
109,300,000
GBP
|