Statement Of Financial Position [Abstract]
| Concept |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2023-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2022-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of financial position [abstract] | ||||||||||||||||||
| Assets [abstract] | ||||||||||||||||||
| Non-current assets [abstract] | ||||||||||||||||||
| Property, plant and equipment | — | — |
9,459,000
GBP
|
— | — | — |
10, 692
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Right-of-use assets | — | — |
42 ,47 1
GBP
|
— | — | — |
4 2, 5 70
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Goodwill | — | — |
40 ,70 9
GBP
|
— | — | — |
26, 050
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Intangible assets other than goodwill | — | — |
114, 8 97
GBP
|
— | — | — |
109,309,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Investments in subsidiaries, joint ventures and associates reported in separate financial statements | — | — |
31,000
GBP
|
— | — | — |
6,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Deferred tax assets | — | — |
1, 905
GBP
|
— | — | — |
1, 38 6
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Non-current assets | — | — |
214 , 2 20
GBP
|
— | — | — |
191,701,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Current assets [abstract] | ||||||||||||||||||
| Trade and other current receivables | — | — |
1 7, 4 3 2
GBP
|
— | — | — |
16, 016
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Cash and cash equivalents | — | — |
4,9 89
GBP
|
— | — | — |
12 ,02 7
GBP
|
— | — | — | — | — | — |
1 9 , 3 74
GBP
|
— | — | — | — |
| Non-current assets or disposal groups classified as held for sale or as held for distribution to owners | — | — |
450,000
GBP
|
— | — | — |
–
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Current assets | — | — |
3 7, 1 2 7
GBP
|
— | — | — |
34 , 476
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Assets | — | — |
25 1, 347
GBP
|
— | — | — |
2 26 ,17 7
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Equity and liabilities [abstract] | ||||||||||||||||||
| Equity [abstract] | ||||||||||||||||||
| Issued capital | — | — |
3, 301
GBP
|
— | — | — |
3,301,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Retained earnings | — | — |
111,175,000
GBP
|
— | — | — |
1 0 7, 1 3 9
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Treasury shares | — | — |
12 , 0 92
GBP
|
— | — | — |
10,993,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Other reserves | — | — |
2 ,653
GBP
|
— | — | — |
2,65 3
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Equity |
3, 3 01
GBP
|
111 ,175
GBP
|
125,605,000
GBP
|
12 , 0 92
GBP
|
20, 56 8
GBP
|
2 ,653
GBP
|
12 2,6 6 8
GBP
|
1 0, 9 9 3
GBP
|
3, 301
GBP
|
1 0 7, 1 3 9
GBP
|
20, 568
GBP
|
2 ,653
GBP
|
6,0 59
GBP
|
12 3,502
GBP
|
103,039,000
GBP
|
2,653,000
GBP
|
20, 568
GBP
|
3,301,000
GBP
|
| Liabilities [abstract] | ||||||||||||||||||
| Non-current liabilities [abstract] | ||||||||||||||||||
| Non-current provisions [abstract] | ||||||||||||||||||
| Non-current provisions | — | — |
3, 0 08
GBP
|
— | — | — |
1, 765
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Deferred tax liabilities | — | — |
28, 153
GBP
|
— | — | — |
2 7, 0 4 9
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Non-current liabilities | — | — |
6 8 ,6 13
GBP
|
— | — | — |
6 4, 8 56
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Current liabilities [abstract] | ||||||||||||||||||
| Current provisions [abstract] | ||||||||||||||||||
| Current provisions | — | — |
1 ,6 09
GBP
|
— | — | — |
1, 50 6
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Trade and other current payables | — | — |
2 1 , 3 0 3
GBP
|
— | — | — |
16,694,000
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Current liabilities | — | — |
5 7,1 2 9
GBP
|
— | — | — |
3 8, 6 53
GBP
|
— | — | — | — | — | — | — | — | — | — | — |
| Liabilities | — | — |
125,7 42
GBP
|
— | — | — |
103 ,5 09
GBP
|
— | — | — | — | — | — | — | — | — | — | — |