Statement Of Comprehensive Income [Abstract]
| Concept |
2020-12-28 to 2021-12-26 |
2020-12-28 to 2021-12-26 |
2020-12-28 to 2021-12-26 |
2020-12-28 to 2021-12-26 |
2020-12-28 to 2021-12-26 |
2020-12-28 to 2021-12-26 |
2020-12-28 to 2021-12-26 |
2020-12-28 to 2021-12-26 |
2020-12-28 to 2021-12-26 |
2020-12-28 to 2021-12-26 |
2020-12-28 to 2021-12-26 |
2020-12-28 to 2021-12-26 |
2019-12-30 to 2020-12-27 |
2019-12-30 to 2020-12-27 |
2019-12-30 to 2020-12-27 |
2019-12-30 to 2020-12-27 |
2019-12-30 to 2020-12-27 |
2019-12-30 to 2020-12-27 |
2019-12-30 to 2020-12-27 |
2019-12-30 to 2020-12-27 |
2019-12-30 to 2020-12-27 |
2019-12-30 to 2020-12-27 |
2019-12-30 to 2020-12-27 |
2019-12-30 to 2020-12-27 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of comprehensive income [abstract] | ||||||||||||||||||||||||
| Profit (loss) |
–
GBP
|
–
GBP
|
78,300,000
GBP
|
–
GBP
|
78,300,000
GBP
|
1 5 .1
GBP
|
93,400,000
GBP
|
78,300,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
41 .1
GBP
|
–
GBP
|
1. 4
GBP
|
4 1 .1
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
4 4 .6
GBP
|
84,300,000
GBP
|
3 9.7
GBP
|
–
GBP
|
| Other comprehensive income [abstract] | ||||||||||||||||||||||||
| Other comprehensive income |
–
GBP
|
–
GBP
|
8,700,000
GBP
|
–
GBP
|
8,700,000
GBP
|
— | — |
–
GBP
|
–
GBP
|
–
GBP
|
8 .7
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
400,000
GBP
|
5 .6
GBP
|
–
GBP
|
–
GBP
|
5,600,000
GBP
|
–
GBP
|
— | — |
5 . 2
GBP
|
–
GBP
|
| Comprehensive income |
–
GBP
|
–
GBP
|
8 7. 0
GBP
|
–
GBP
|
8 7. 0
GBP
|
— | — |
78,300,000
GBP
|
–
GBP
|
–
GBP
|
8 .7
GBP
|
–
GBP
|
41 .1
GBP
|
–
GBP
|
1 .0
GBP
|
35,500,000
GBP
|
–
GBP
|
–
GBP
|
5. 6
GBP
|
–
GBP
|
— | — |
34,500,000
GBP
|
–
GBP
|
| Comprehensive income attributable to [abstract] | ||||||||||||||||||||||||
| Comprehensive income, attributable to owners of parent | — | — | — | — |
8 7. 0
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
35,500,000
GBP
|
— |
| Comprehensive income, attributable to non-controlling interests | — | — | — | — |
–
GBP
|
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
1. 0
GBP
|
— |