Statement Of Cash Flows [Abstract]
| Concept |
2022-01-02 to 2022-12-31 |
2021-01-03 to 2022-01-01 |
|---|---|---|
| Statement of cash flows [abstract] | ||
| Cash flows from (used in) operating activities [abstract] | ||
| Adjustments for decrease (increase) in trade and other receivables |
1 2 . 4
GBP
|
1,800,000
GBP
|
| Adjustments for increase (decrease) in trade and other payables |
30,800,000
GBP
|
5 8.9
GBP
|
| Adjustments for increase (decrease) in employee benefit liabilities |
8 . 0
GBP
|
2 .5
GBP
|
| Adjustments for amortisation expense |
4 .7
GBP
|
4,500,000
GBP
|
| Adjustments for impairment loss (reversal of impairment loss) recognised in profit or loss, property, plant and equipment |
1,200,000
GBP
|
1,900,000
GBP
|
| Adjustments for gain (loss) on disposals, property, plant and equipment |
1 .0
GBP
|
900,000
GBP
|
| Cash flows from (used in) investing activities [abstract] | ||
| Proceeds from disposal of non-current assets or disposal groups classified as held for sale and discontinued operations |
1 .6
GBP
|
–
GBP
|
| Cash flows from (used in) financing activities [abstract] | ||
| Proceeds from sale or issue of treasury shares |
–
GBP
|
300,000
GBP
|