Statement Of Cash Flows [Abstract]
| Concept |
As at 2022-03-31 |
2021-03-28 to 2022-03-26 |
2021-03-28 to 2022-03-26 |
2021-03-28 to 2022-03-26 |
2021-03-28 to 2022-03-26 |
2021-03-28 to 2022-03-26 |
2021-03-28 to 2022-03-26 |
2021-03-28 to 2022-03-26 |
2021-03-28 to 2022-03-26 |
2021-03-28 to 2022-03-26 |
As at 2022-03-26 |
As at 2021-03-27 |
2020-03-29 to 2021-03-27 |
2020-03-29 to 2021-03-27 |
2020-03-29 to 2021-03-27 |
2020-03-29 to 2021-03-27 |
2020-03-29 to 2021-03-27 |
2020-03-29 to 2021-03-27 |
2020-03-29 to 2021-03-27 |
2020-03-29 to 2021-03-27 |
2020-03-29 to 2021-03-27 |
As at 2020-03-28 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of cash flows [abstract] | ||||||||||||||||||||||
| Cash flows from (used in) operating activities [abstract] | ||||||||||||||||||||||
| Profit (loss) | — |
–
GBP
|
–
GBP
|
2 1. 5
GBP
|
–
GBP
|
2 3 .7
GBP
|
2,200,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
— | — |
8 .1
GBP
|
2. 2
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
5,900,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
— |
| Adjustments to reconcile profit (loss) [abstract] | ||||||||||||||||||||||
| Adjustments for decrease (increase) in inventories | — | — | — | — | — |
3,400,000
GBP
|
— | — | — | — | — | — |
4 .0
GBP
|
— | — | — | — | — | — | — | — | — |
| Adjustments for provisions | — | — | — | — | — |
3. 7
GBP
|
— | — | — | — | — | — |
900,000
GBP
|
— | — | — | — | — | — | — | — | — |
| Adjustments for share-based payments | — | — | — | — | — |
1. 8
GBP
|
— | — | — | — | — | — |
400,000
GBP
|
— | — | — | — | — | — | — | — | — |
| Other adjustments for non-cash items | — | — | — | — | — |
2,300,000
GBP
|
— | — | — | — | — | — |
2. 3
GBP
|
— | — | — | — | — | — | — | — | — |
| Cash flows from (used in) operations | — | — | — | — | — |
18 . 3
GBP
|
— | — | — | — | — | — |
5,600,000
GBP
|
— | — | — | — | — | — | — | — | — |
| Income taxes paid (refund), classified as operating activities | — | — | — | — | — |
1. 8
GBP
|
— | — | — | — | — | — |
2,400,000
GBP
|
— | — | — | — | — | — | — | — | — |
| Cash flows from (used in) operating activities | — | — | — | — | — |
16 . 5
GBP
|
— | — | — | — | — | — |
8,000,000
GBP
|
— | — | — | — | — | — | — | — | — |
| Cash flows from (used in) investing activities [abstract] | ||||||||||||||||||||||
| Proceeds from sales of property, plant and equipment, classified as investing activities | — | — | — | — | — |
1. 9
GBP
|
— | — | — | — | — | — |
2,700,000
GBP
|
— | — | — | — | — | — | — | — | — |
| Purchase of intangible assets, classified as investing activities | — | — | — | — | — |
8. 8
GBP
|
— | — | — | — | — | — |
5,600,000
GBP
|
— | — | — | — | — | — | — | — | — |
| Interest received, classified as investing activities | — | — | — | — | — |
–
GBP
|
— | — | — | — | — | — |
0 .1
GBP
|
— | — | — | — | — | — | — | — | — |
| Cash flows from (used in) investing activities | — | — | — | — | — |
2 5. 8
GBP
|
— | — | — | — | — | — |
20,200,000
GBP
|
— | — | — | — | — | — | — | — | — |
| Cash flows from (used in) financing activities [abstract] | ||||||||||||||||||||||
| Payments of lease liabilities, classified as financing activities | — | — | — | — | — |
2 . 2
GBP
|
— | — | — | — | — | — |
2. 2
GBP
|
— | — | — | — | — | — | — | — | — |
| Interest paid, classified as financing activities | — | — | — | — | — |
6,200,000
GBP
|
— | — | — | — | — | — |
5 .7
GBP
|
— | — | — | — | — | — | — | — | — |
| Cash flows from (used in) financing activities | — | — | — | — | — |
7. 7
GBP
|
— | — | — | — | — | — |
3 9 .7
GBP
|
— | — | — | — | — | — | — | — | — |
| Increase (decrease) in cash and cash equivalents before effect of exchange rate changes | — | — | — | — | — |
1. 6
GBP
|
— | — | — | — | — | — |
11 . 5
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
|
— | — | — | — | — | — |
300,000
GBP
|
— | — | — | — | — | — | — | — | — |
| Cash and cash equivalents |
24,300,000
GBP
|
— | — | — | — | — | — | — | — | — |
24,300,000
GBP
|
25 .7
GBP
|
— | — | — | — | — | — | — | — | — |
14 . 5
GBP
|