Statement Of Cash Flows [Abstract]
| Concept |
2022-01-01 to 2022-12-31 |
2021-01-01 to 2021-12-31 |
|---|---|---|
| Statement of cash flows [abstract] | ||
| Cash flows from (used in) operating activities [abstract] | ||
| Adjustments for finance income |
1,600,000
GBP
|
—
GBP
|
| Adjustments for decrease (increase) in trade and other receivables |
12,100,000
GBP
|
12,000,000
GBP
|
| Adjustments for increase (decrease) in trade and other payables |
2,900,000
GBP
|
26,200,000
GBP
|
| Adjustments for increase (decrease) in deferred income including contract liabilities [abstract] | ||
| Adjustments for increase (decrease) in deferred income other than contract liabilities |
3,900,000
GBP
|
1,700,000
GBP
|
| Adjustments for amortisation expense |
1,700,000
GBP
|
5,400,000
GBP
|
| Adjustments for gains (losses) on fair value adjustment, investment property |
759,500,000
GBP
|
840,900,000
GBP
|
| Adjustments for gains (losses) on change in fair value of derivatives |
14,900,000
GBP
|
2,800,000
GBP
|
| Adjustments for undistributed profits of investments accounted for using equity method |
500,000
GBP
|
100,000
GBP
|
| Cash flows from (used in) investing activities [abstract] | ||
| Dividends received from joint ventures, classified as investing activities |
500,000
GBP
|
900,000
GBP
|
| Purchase of investment property |
286,800,000
GBP
|
316,900,000
GBP
|
| Proceeds from sales of investment property |
—
GBP
|
4,200,000
GBP
|
| Cash flows from (used in) financing activities [abstract] | ||
| Proceeds from issue of ordinary shares |
2,300,000
GBP
|
302,800,000
GBP
|
| Payments for share issue costs |
—
GBP
|
5,800,000
GBP
|
| Payments for debt issue costs |
1,400,000
GBP
|
700,000
GBP
|