Statement Of Comprehensive Income [Abstract]
| Concept |
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 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of comprehensive income [abstract] | ||||||||||||||||||
| Profit (loss) |
2,200,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
2 1. 5
GBP
|
–
GBP
|
2 3 .7
GBP
|
–
GBP
|
8 .1
GBP
|
2. 2
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
5,900,000
GBP
|
–
GBP
|
–
GBP
|
| Other comprehensive income [abstract] | ||||||||||||||||||
| Components of other comprehensive income that will not be reclassified to profit or loss, before tax [abstract] | ||||||||||||||||||
| Other comprehensive income, before tax, gains (losses) on remeasurements of defined benefit plans | — | — | — | — | — | — | — | — |
3 5 .7
GBP
|
— |
9 5.6
GBP
|
— | — | — | — | — | — | — |
| Components of other comprehensive income that will be reclassified to profit or loss, before tax [abstract] | ||||||||||||||||||
| Exchange differences on translation [abstract] | ||||||||||||||||||
| Gains (losses) on exchange differences on translation of foreign operations, before tax | — | — | — | — | — | — | — | — |
1. 5
GBP
|
— |
3,900,000
GBP
|
— | — | — | — | — | — | — |
| Reclassification adjustments on exchange differences on translation of foreign operations, before tax | — | — | — | — | — | — | — | — |
0 .1
GBP
|
— |
–
GBP
|
— | — | — | — | — | — | — |
| Cash flow hedges [abstract] | ||||||||||||||||||
| Gains (losses) on cash flow hedges, before tax | — | — | — | — | — | — | — | — |
600,000
GBP
|
— |
300,000
GBP
|
— | — | — | — | — | — | — |
| Reclassification adjustments on cash flow hedges, before tax | — | — | — | — | — | — | — | — |
0. 8
GBP
|
— |
400,000
GBP
|
— | — | — | — | — | — | — |
| Income tax relating to components of other comprehensive income that will not be reclassified to profit or loss [abstract] | ||||||||||||||||||
| Income tax relating to remeasurements of defined benefit plans included in other comprehensive income | — | — | — | — | — | — | — | — |
8. 8
GBP
|
— |
18 . 2
GBP
|
— | — | — | — | — | — | — |
| Income tax relating to components of other comprehensive income that will be reclassified to profit or loss [abstract] | ||||||||||||||||||
| Income tax relating to components of other comprehensive income that will be reclassified to profit or loss | — | — | — | — | — | — | — | — |
0 .1
GBP
|
— |
0. 2
GBP
|
— | — | — | — | — | — | — |
| Other comprehensive income |
0 .1
GBP
|
–
GBP
|
–
GBP
|
1. 5
GBP
|
300,000
GBP
|
–
GBP
|
2 7. 1
GBP
|
–
GBP
|
26,000,000
GBP
|
–
GBP
|
8 2. 2
GBP
|
–
GBP
|
3,900,000
GBP
|
–
GBP
|
900,000
GBP
|
7 7. 4
GBP
|
–
GBP
|
–
GBP
|
| Comprehensive income |
2,300,000
GBP
|
–
GBP
|
–
GBP
|
1. 5
GBP
|
300,000
GBP
|
–
GBP
|
4 8.6
GBP
|
–
GBP
|
4 9.7
GBP
|
–
GBP
|
74 .1
GBP
|
2. 2
GBP
|
3,900,000
GBP
|
–
GBP
|
900,000
GBP
|
7 1 .5
GBP
|
–
GBP
|
–
GBP
|
| Comprehensive income attributable to [abstract] | ||||||||||||||||||
| Comprehensive income, attributable to owners of parent | — | — | — | — | — | — | — | — |
4 7. 4
GBP
|
— |
76 . 3
GBP
|
— | — | — | — | — | — | — |
| Comprehensive income, attributable to non-controlling interests | — | — | — | — | — | — | — | — |
2 .3
GBP
|
— |
2. 2
GBP
|
— | — | — | — | — | — | — |