Statement Of Cash Flows [Abstract]
| Concept |
2021-08-01 to 2022-07-31 |
As at 2022-07-31 |
2021-08-01 to 2022-07-31 |
2021-08-01 to 2022-07-31 |
2021-08-01 to 2022-07-31 |
2021-08-01 to 2022-07-31 |
2021-08-01 to 2022-07-31 |
2020-08-01 to 2021-07-31 |
2020-08-01 to 2021-07-31 |
2020-08-01 to 2021-07-31 |
2020-08-01 to 2021-07-31 |
2020-08-01 to 2021-07-31 |
As at 2021-07-31 |
2020-08-01 to 2021-07-31 |
As at 2020-07-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of cash flows [abstract] | |||||||||||||||
| Cash flows from (used in) operating activities [abstract] | |||||||||||||||
| Profit (loss) |
242,600,000
GBP
|
— |
–
GBP
|
–
GBP
|
–
GBP
|
242,600,000
GBP
|
–
GBP
|
390,700,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
390,700,000
GBP
|
— |
–
GBP
|
— |
| Adjustments to reconcile profit (loss) [abstract] | |||||||||||||||
| Adjustments for income tax expense |
61,600,000
GBP
|
— | — | — | — | — | — |
88,300,000
GBP
|
— | — | — | — | — | — | — |
| Adjustments for finance costs |
15,700,000
GBP
|
— | — | — | — | — | — |
11,700,000
GBP
|
— | — | — | — | — | — | — |
| Adjustments for decrease (increase) in inventories |
391,400,000
GBP
|
— | — | — | — | — | — |
160,300,000
GBP
|
— | — | — | — | — | — | — |
| Adjustments for provisions |
325,500,000
GBP
|
— | — | — | — | — | — |
45,700,000
GBP
|
— | — | — | — | — | — | — |
| Adjustments for share-based payments |
3 .1
GBP
|
— | — | — | — | — | — |
2 .6
GBP
|
— | — | — | — | — | — | — |
| Cash flows from (used in) operations |
114,600,000
GBP
|
— | — | — | — | — | — |
519,600,000
GBP
|
— | — | — | — | — | — | — |
| Interest paid, classified as operating activities |
5,800,000
GBP
|
— | — | — | — | — | — |
3,000,000
GBP
|
— | — | — | — | — | — | — |
| Income taxes paid (refund), classified as operating activities |
63,800,000
GBP
|
— | — | — | — | — | — |
84,100,000
GBP
|
— | — | — | — | — | — | — |
| Cash flows from (used in) operating activities |
45,000,000
GBP
|
— | — | — | — | — | — |
432,500,000
GBP
|
— | — | — | — | — | — | — |
| Cash flows from (used in) investing activities [abstract] | |||||||||||||||
| Cash flows used in obtaining control of subsidiaries or other businesses, classified as investing activities |
–
GBP
|
— | — | — | — | — | — |
8,900,000
GBP
|
— | — | — | — | — | — | — |
| Proceeds from sales of property, plant and equipment, classified as investing activities |
100,000
GBP
|
— | — | — | — | — | — |
1,500,000
GBP
|
— | — | — | — | — | — | — |
| Purchase of property, plant and equipment, classified as investing activities |
500,000
GBP
|
— | — | — | — | — | — |
3,300,000
GBP
|
— | — | — | — | — | — | — |
| Interest received, classified as investing activities |
500,000
GBP
|
— | — | — | — | — | — |
0. 4
GBP
|
— | — | — | — | — | — | — |
| Cash flows from (used in) investing activities |
35,300,000
GBP
|
— | — | — | — | — | — |
5,600,000
GBP
|
— | — | — | — | — | — | — |
| Cash flows from (used in) financing activities [abstract] | |||||||||||||||
| Proceeds from issuing shares |
2,200,000
GBP
|
— | — | — | — | — | — |
1,400,000
GBP
|
— | — | — | — | — | — | — |
| Payments to acquire or redeem entity's shares |
7 .4
GBP
|
— | — | — | — | — | — |
2,500,000
GBP
|
— | — | — | — | — | — | — |
| Payments of lease liabilities, classified as financing activities |
2,900,000
GBP
|
— | — | — | — | — | — |
3,400,000
GBP
|
— | — | — | — | — | — | — |
| Dividends paid, classified as financing activities |
157 .2
GBP
|
— | — | — | — | — | — |
104,700,000
GBP
|
— | — | — | — | — | — | — |
| Cash flows from (used in) financing activities |
165,300,000
GBP
|
— | — | — | — | — | — |
29,200,000
GBP
|
— | — | — | — | — | — | — |
| Increase (decrease) in cash and cash equivalents after effect of exchange rate changes |
85,000,000
GBP
|
— | — | — | — | — | — |
408,900,000
GBP
|
— | — | — | — | — | — | — |
| Cash and cash equivalents | — |
375,300,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
460,300,000
GBP
|
— |
51,400,000
GBP
|