Statement Of Comprehensive Income [Abstract]
| Concept |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of comprehensive income [abstract] | ||||||||||||||||||||||
| Profit (loss) |
0. 8
GBP
|
–
GBP
|
15. 0
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
15,800,000
GBP
|
1 5.0
GBP
|
192 . 5
GBP
|
–
GBP
|
193 .6
GBP
|
–
GBP
|
–
GBP
|
1 .1
GBP
|
–
GBP
|
–
GBP
|
1 93. 6
GBP
|
–
GBP
|
–
GBP
|
| Other comprehensive income [abstract] | ||||||||||||||||||||||
| Components of other comprehensive income that will not be reclassified to profit or loss, net of tax [abstract] | ||||||||||||||||||||||
| Other comprehensive income, net of tax, gains (losses) on revaluation of property, plant and equipment, right-of-use assets and intangible assets | — | — | — | — | — | — | — | — | — |
–
GBP
|
— |
1 .1
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Components of other comprehensive income that will be reclassified to profit or loss, net of tax [abstract] | ||||||||||||||||||||||
| Exchange differences on translation [abstract] | ||||||||||||||||||||||
| Other comprehensive income, net of tax, exchange differences on translation of foreign operations | — | — | — | — | — | — | — | — | — |
600,000
GBP
|
— |
600,000
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Other comprehensive income |
–
GBP
|
–
GBP
|
600,000
GBP
|
–
GBP
|
–
GBP
|
0. 5
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
600,000
GBP
|
100,000
GBP
|
1 .7
GBP
|
–
GBP
|
600,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
1,700,000
GBP
|
1 .1
GBP
|
–
GBP
|
| Comprehensive income |
0. 8
GBP
|
–
GBP
|
15. 6
GBP
|
–
GBP
|
–
GBP
|
0. 5
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
16 . 4
GBP
|
15. 1
GBP
|
190 .8
GBP
|
–
GBP
|
193 . 0
GBP
|
–
GBP
|
–
GBP
|
1,100,000
GBP
|
–
GBP
|
–
GBP
|
191. 9
GBP
|
1 .1
GBP
|
–
GBP
|
| Comprehensive income attributable to [abstract] | ||||||||||||||||||||||
| Comprehensive income, attributable to owners of parent | — | — | — | — | — | — | — | — | — |
15,600,000
GBP
|
— |
191 .9
GBP
|
— | — | — | — | — | — | — | — | — | — |
| Comprehensive income, attributable to non-controlling interests | — | — | — | — | — | — | — | — | — |
0. 8
GBP
|
— |
1 .1
GBP
|
— | — | — | — | — | — | — | — | — | — |