Statement Of Cash Flows [Abstract]
| Concept |
As at 2023-07-01 |
2022-07-03 to 2023-07-01 |
2021-06-27 to 2022-07-02 |
As at 2022-07-02 |
As at 2021-06-26 |
|---|---|---|---|---|---|
| Statement of cash flows [abstract] | |||||
| Cash flows from (used in) operating activities [abstract] | |||||
| Income taxes paid (refund), classified as operating activities | — |
38,200,000
GBP
|
35,200,000
GBP
|
— | — |
| Cash flows from (used in) operating activities | — |
240,600,000
GBP
|
251,800,000
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
|
17,700,000
GBP
|
— | — |
| Purchase of property, plant and equipment, classified as investing activities | — |
21,400,000
GBP
|
23,300,000
GBP
|
— | — |
| Purchase of intangible assets, classified as investing activities | — |
400,000
GBP
|
700,000
GBP
|
— | — |
| Interest received, classified as investing activities | — |
1,100,000
GBP
|
100,000
GBP
|
— | — |
| Cash flows from (used in) investing activities | — |
20,700,000
GBP
|
41,600,000
GBP
|
— | — |
| Cash flows from (used in) financing activities [abstract] | |||||
| Proceeds from issuing shares | — |
2,400,000
GBP
|
3,900,000
GBP
|
— | — |
| Payments to acquire or redeem entity's shares | — |
7,000,000
GBP
|
28,300,000
GBP
|
— | — |
| Proceeds from borrowings, classified as financing activities | — |
139,000,000
GBP
|
85,000,000
GBP
|
— | — |
| Repayments of borrowings, classified as financing activities | — |
116,000,000
GBP
|
31,000,000
GBP
|
— | — |
| Payments of lease liabilities, classified as financing activities | — |
52,000,000
GBP
|
50,200,000
GBP
|
— | — |
| Dividends paid, classified as financing activities | — |
163,300,000
GBP
|
282,100,000
GBP
|
— | — |
| Cash flows from (used in) financing activities | — |
204,400,000
GBP
|
309,700,000
GBP
|
— | — |
| Increase (decrease) in cash and cash equivalents before effect of exchange rate changes | — |
15,500,000
GBP
|
99,500,000
GBP
|
— | — |
| Effect of exchange rate changes on cash and cash equivalents [abstract] | |||||
| Effect of exchange rate changes on cash and cash equivalents | — |
600,000
GBP
|
1,100,000
GBP
|
— | — |
| Cash and cash equivalents |
46,300,000
GBP
|
— | — |
30,200,000
GBP
|
128,600,000
GBP
|