Profit Or Loss [Abstract]
| Concept |
2023-12-31 to 2024-12-28 |
2023-12-31 to 2024-12-28 |
2023-12-31 to 2024-12-28 |
2023-12-31 to 2024-12-28 |
2023-12-31 to 2024-12-28 |
2023-12-31 to 2024-12-28 |
2023-12-31 to 2024-12-28 |
2023-01-01 to 2023-12-30 |
2023-01-01 to 2023-12-30 |
2023-01-01 to 2023-12-30 |
2023-01-01 to 2023-12-30 |
2023-01-01 to 2023-12-30 |
2023-01-01 to 2023-12-30 |
2023-01-01 to 2023-12-30 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Profit or loss [abstract] | ||||||||||||||
| Profit (loss) [abstract] | ||||||||||||||
| Revenue | — | — |
2,014,400,000
GBP
|
— | — |
–
GBP
|
2, 014.4
GBP
|
–
GBP
|
1,809,600,000
GBP
|
— | — | — |
1,809,600,000
GBP
|
— |
| Cost of sales | — | — |
770,800,000
GBP
|
— | — |
–
GBP
|
770,800,000
GBP
|
–
GBP
|
710,500,000
GBP
|
— | — | — |
710,500,000
GBP
|
— |
| Gross profit | — | — |
1,243,600,000
GBP
|
— | — |
–
GBP
|
1,243,600,000
GBP
|
–
GBP
|
1,099,100,000
GBP
|
— | — | — |
1,099,100,000
GBP
|
— |
| Other income | — | — |
13,800,000
GBP
|
— | — |
13,800,000
GBP
|
–
GBP
|
20,300,000
GBP
|
–
GBP
|
— | — | — |
20,300,000
GBP
|
— |
| Administrative expenses | — | — |
97 .9
GBP
|
— | — |
–
GBP
|
97 .9
GBP
|
–
GBP
|
82,900,000
GBP
|
— | — | — |
82,900,000
GBP
|
— |
| Profit (loss) from operating activities | — | — |
209,400,000
GBP
|
— | — |
14,100,000
GBP
|
195,300,000
GBP
|
20,600,000
GBP
|
171,700,000
GBP
|
— | — | — |
192,300,000
GBP
|
— |
| Finance income | — | — |
8,100,000
GBP
|
— | — |
–
GBP
|
8,100,000
GBP
|
–
GBP
|
6,100,000
GBP
|
— | — | — |
6,100,000
GBP
|
— |
| Finance costs | — | — |
13,600,000
GBP
|
— | — |
–
GBP
|
13,600,000
GBP
|
–
GBP
|
10,100,000
GBP
|
— | — | — |
10,100,000
GBP
|
— |
| Profit (loss) before tax | — | — |
203,900,000
GBP
|
— | — |
14,100,000
GBP
|
189,800,000
GBP
|
20,600,000
GBP
|
167 .7
GBP
|
— | — | — |
188,300,000
GBP
|
— |
| Tax expense (income) | — | — |
50,500,000
GBP
|
— | — |
1,700,000
GBP
|
48,800,000
GBP
|
4,800,000
GBP
|
4 1.0
GBP
|
— | — | — |
45,800,000
GBP
|
— |
| Profit (loss) |
–
GBP
|
–
GBP
|
153,400,000
GBP
|
–
GBP
|
153,400,000
GBP
|
12,400,000
GBP
|
14 1.0
GBP
|
15,800,000
GBP
|
126,700,000
GBP
|
–
GBP
|
–
GBP
|
142,500,000
GBP
|
142,500,000
GBP
|
–
GBP
|
| Earnings per share [text block] | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Earnings per share [abstract] | ||||||||||||||
| Earnings per share [line items] | ||||||||||||||
| Basic earnings per share [abstract] | ||||||||||||||
| Basic earnings (loss) per share | — | — |
1.507
|
— | — |
0.122
|
1.385
|
0.156
|
125. 0
|
— | — | — |
1.406
|
— |
| Diluted earnings per share [abstract] | ||||||||||||||
| Diluted earnings (loss) per share | — | — |
1.496
|
— | — |
0.121
|
137 .5
|
0.154
|
1.238
|
— | — | — |
1.392
|
— |