Statement Of Cash Flows [Abstract]
| Concept |
As at 2024-06-02 |
2023-05-29 to 2024-06-02 |
2022-05-30 to 2024-06-02 |
2023-05-29 to 2024-06-02 |
2023-05-29 to 2024-06-02 |
2023-05-29 to 2024-06-02 |
2023-05-29 to 2024-06-02 |
2023-05-29 to 2023-06-02 |
As at 2023-05-29 |
2022-05-30 to 2023-05-28 |
As at 2023-05-28 |
2022-05-30 to 2023-05-28 |
2022-05-30 to 2023-05-28 |
2022-05-30 to 2023-05-28 |
2022-05-30 to 2023-05-28 |
As at 2022-05-30 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of cash flows [abstract] | ||||||||||||||||
| Cash flows from (used in) operating activities [abstract] | ||||||||||||||||
| Profit (loss) | — |
-
GBP
|
— |
-
GBP
|
-
GBP
|
151,100,000
GBP
|
151,100,000
GBP
|
— | — |
134,700,000
GBP
|
— |
134,700,000
GBP
|
-
GBP
|
-
GBP
|
-
GBP
|
— |
| Cash flows from (used in) operations | — | — |
237,900,000
GBP
|
— | — | — | — | — | — |
231,700,000
GBP
|
— | — | — | — | — | — |
| Cash flows from (used in) operating activities | — | — |
196,200,000
GBP
|
— | — | — | — | — | — |
192,700,000
GBP
|
— | — | — | — | — | — |
| Cash flows from (used in) investing activities [abstract] | ||||||||||||||||
| Purchase of property, plant and equipment, classified as investing activities | — | — |
15,600,000
GBP
|
— | — | — | — | — | — |
14,800,000
GBP
|
— | — | — | — | — | — |
| Purchase of other long-term assets, classified as investing activities | — | — |
1,600,000
GBP
|
— | — | — | — | — | — |
400,000
GBP
|
— | — | — | — | — | — |
| Interest received, classified as investing activities | — | — |
2,500,000
GBP
|
— | — | — | — | — | — |
1,200,000
GBP
|
— | — | — | — | — | — |
| Cash flows from (used in) investing activities | — | — |
30,100,000
GBP
|
— | — | — | — | — | — |
27,100,000
GBP
|
— | — | — | — | — | — |
| Cash flows from (used in) financing activities [abstract] | ||||||||||||||||
| Proceeds from issuing shares | — | — |
2,700,000
GBP
|
— | — | — | — | — | — |
2,600,000
GBP
|
— | — | — | — | — | — |
| Payments of lease liabilities, classified as financing activities | — | — |
11,800,000
GBP
|
— | — | — | — | — | — |
11,800,000
GBP
|
— | — | — | — | — | — |
| Interest paid, classified as financing activities | — | — |
-
GBP
|
— | — | — | — | — | — |
-
GBP
|
— | — | — | — | — | — |
| Cash flows from (used in) financing activities | — | — |
148,500,000
GBP
|
— | — | — | — | — | — |
146,600,000
GBP
|
— | — | — | — | — | — |
| Increase (decrease) in cash and cash equivalents before effect of exchange rate changes | — | — |
17,600,000
GBP
|
— | — | — | — | — | — |
19,000,000
GBP
|
— | — | — | — | — | — |
| Effect of exchange rate changes on cash and cash equivalents [abstract] | ||||||||||||||||
| Effect of exchange rate changes on cash and cash equivalents | — | — | — | — | — | — | — |
200,000
GBP
|
— |
200,000
GBP
|
— | — | — | — | — | — |
| Cash and cash equivalents |
107,600,000
GBP
|
— | — | — | — | — | — | — |
90,200,000
GBP
|
— |
90,200,000
GBP
|
— | — | — | — |
71,400,000
GBP
|