Statement Of Cash Flows [Abstract]
| Concept |
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 |
|---|---|---|---|---|
| Statement of cash flows [abstract] | ||||
| Cash flows from (used in) operating activities [abstract] | ||||
| Adjustments for finance income (cost) |
3,100,000
GBP
|
2,200,000
GBP
|
2,000,000
GBP
|
2,900,000
GBP
|
| Adjustments for increase (decrease) in employee benefit liabilities |
26,900,000
GBP
|
26,600,000
GBP
|
27,300,000
GBP
|
27,500,000
GBP
|
| Income taxes paid, classified as operating activities |
500,000
GBP
|
–
GBP
|
–
GBP
|
–
GBP
|
| Cash flows from (used in) investing activities [abstract] | ||||
| Purchase of investment property |
251,800,000
GBP
|
–
GBP
|
–
GBP
|
43,800,000
GBP
|
| Proceeds from sales of investment property |
297,300,000
GBP
|
–
GBP
|
–
GBP
|
125,600,000
GBP
|
| Payments for development project expenditure |
172,100,000
GBP
|
–
GBP
|
–
GBP
|
173,400,000
GBP
|
| Cash flows from (used in) financing activities [abstract] | ||||
| Proceeds from current borrowings |
–
GBP
|
–
GBP
|
24,200,000
GBP
|
24,200,000
GBP
|
| Repayments of current borrowings |
–
GBP
|
–
GBP
|
6,500,000
GBP
|
6,500,000
GBP
|
| Cash flows from (used in) increase (decrease) in current borrowings |
117,800,000
GBP
|
117,800,000
GBP
|
38,000,000
GBP
|
38,000,000
GBP
|
| Cash advances and loans from related parties |
–
GBP
|
153,700,000
GBP
|
77,700,000
GBP
|
–
GBP
|
| Proceeds from issue of bonds, notes and debentures |
346,000,000
GBP
|
346,000,000
GBP
|
–
GBP
|
–
GBP
|