Statement Of Cash Flows [Abstract]
| Concept |
2021-01-01 to 2021-12-31 |
2020-01-01 to 2020-12-31 |
|---|---|---|
| Statement of cash flows [abstract] | ||
| Cash flows from (used in) investing activities [abstract] | ||
| Proceeds from sales of interests in associates |
500,000
GBP
|
–
GBP
|
| Purchase of investment property |
164,600,000
GBP
|
124,600,000
GBP
|
| Proceeds from sales of investment property |
37,000,000
GBP
|
62,200,000
GBP
|
| Payments for development project expenditure |
35,800,000
GBP
|
18,900,000
GBP
|
| Cash flows from (used in) financing activities [abstract] | ||
| Payments for debt issue costs |
1,400,000
GBP
|
2,500,000
GBP
|