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 |
As at 2021-03-31 |
|---|---|---|---|---|---|
| Statement of cash flows [abstract] | |||||
| Cash flows from (used in) operating activities [abstract] | |||||
| Classes of cash receipts from operating activities [abstract] | |||||
| Receipts from contracts held for dealing or trading purposes | — |
–
GBP
|
8,000,000
GBP
|
— | — |
| Cash flows from (used in) operations | — |
238,000,000
GBP
|
256,000,000
GBP
|
— | — |
| Interest paid, classified as operating activities | — |
71,000,000
GBP
|
62,000,000
GBP
|
— | — |
| Income taxes paid (refund), classified as operating activities | — |
–
GBP
|
6,000,000
GBP
|
— | — |
| Cash flows from (used in) operating activities | — |
240,000,000
GBP
|
245,000,000
GBP
|
— | — |
| Cash flows from (used in) investing activities [abstract] | |||||
| Cash advances and loans made to other parties, classified as investing activities | — |
148,000,000
GBP
|
121,000,000
GBP
|
— | — |
| Income taxes paid (refund), classified as investing activities | — |
4,000,000
GBP
|
5,000,000
GBP
|
— | — |
| Cash flows from (used in) investing activities | — |
326,000,000
GBP
|
385,000,000
GBP
|
— | — |
| Cash flows from (used in) financing activities [abstract] | |||||
| Proceeds from borrowings, classified as financing activities | — |
324,000,000
GBP
|
483,000,000
GBP
|
— | — |
| Repayments of borrowings, classified as financing activities | — |
637,000,000
GBP
|
213,000,000
GBP
|
— | — |
| Payments of lease liabilities, classified as financing activities | — |
4,000,000
GBP
|
4,000,000
GBP
|
— | — |
| Cash flows from (used in) financing activities | — |
552,000,000
GBP
|
60,000,000
GBP
|
— | — |
| Increase (decrease) in cash and cash equivalents after effect of exchange rate changes | — |
14,000,000
GBP
|
8 0
GBP
|
— | — |
| Cash and cash equivalents |
125,000,000
GBP
|
— | — |
111,000,000
GBP
|
191,000,000
GBP
|