Statement Of Changes In Equity [Abstract]
| Concept |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2023-01-01 to 2023-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
2022-01-01 to 2022-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|
| Statement of changes in equity [abstract] | ||||||||||
| Statement of changes in equity [line items] | ||||||||||
| Increase (decrease) through transfer between revaluation surplus and retained earnings, equity |
-
GBP
|
-
GBP
|
57,188,124
GBP
|
-
GBP
|
57,188,124
GBP
|
-
GBP
|
3,338,205,975
GBP
|
-
GBP
|
-
GBP
|
3,338,205,975
GBP
|
| Increase (decrease) through exercise of options, equity |
-
GBP
|
778
GBP
|
19,832
GBP
|
-
GBP
|
20,610
GBP
|
— | — | — | — | — |
| Increase (decrease) through transactions with owners, equity |
99
GBP
|
2,892,140
GBP
|
441,196
GBP
|
90,272
GBP
|
2,360,573
GBP
|
-
GBP
|
847,334
GBP
|
793,690
GBP
|
-
GBP
|
53,644
GBP
|
| Purchase of treasury shares |
-
GBP
|
4,216,180
GBP
|
-
GBP
|
-
GBP
|
4,216,180
GBP
|
-
GBP
|
228,383
GBP
|
228,383
GBP
|
-
GBP
|
-
GBP
|
| Cancellation of treasury shares |
99
GBP
|
-
GBP
|
461,028
GBP
|
90,272
GBP
|
551,399
GBP
|
-
GBP
|
153,900
GBP
|
207,544
GBP
|
-
GBP
|
53,644
GBP
|