Statement Of Cash Flows [Abstract]
| Concept |
As at 2024-09-30 |
2023-10-01 to 2024-09-30 |
As at 2023-09-30 |
2022-10-01 to 2023-09-30 |
As at 2022-09-30 |
|---|---|---|---|---|---|
| Statement of cash flows [abstract] | |||||
| Cash flows from (used in) operating activities [abstract] | |||||
| Cash flows from (used in) operations | — |
127,053,000
GBP
|
— |
120,502,000
GBP
|
— |
| Income taxes paid (refund), classified as operating activities | — |
30,763,000
GBP
|
— |
19,092,000
GBP
|
— |
| Cash flows from (used in) operating activities | — |
96,290,000
GBP
|
— |
101,410,000
GBP
|
— |
| Cash flows from (used in) investing activities [abstract] | |||||
| Purchase of property, plant and equipment, classified as investing activities | — |
1,476,000
GBP
|
— |
1,574,000
GBP
|
— |
| Purchase of intangible assets, classified as investing activities | — |
1,473,000
GBP
|
— |
1,926,000
GBP
|
— |
| Interest received, classified as investing activities | — |
6,909,000
GBP
|
— |
2,393,000
GBP
|
— |
| Cash flows from (used in) investing activities | — |
3,960,000
GBP
|
— |
1,107,000
GBP
|
— |
| Cash flows from (used in) financing activities [abstract] | |||||
| Proceeds from issuing shares | — |
–
GBP
|
— |
34,000
GBP
|
— |
| Payments to acquire or redeem entity's shares | — |
–
GBP
|
— |
2,000,000
GBP
|
— |
| Payments of lease liabilities, classified as financing activities | — |
1,583,000
GBP
|
— |
1,576,000
GBP
|
— |
| Dividends paid, classified as financing activities | — |
47,416,000
GBP
|
— |
33,294,000
GBP
|
— |
| Interest paid, classified as financing activities | — |
904,000
GBP
|
— |
952,000
GBP
|
— |
| Income taxes paid (refund), classified as financing activities | — |
–
GBP
|
— |
241,000
GBP
|
— |
| Cash flows from (used in) financing activities | — |
49,903,000
GBP
|
— |
38,029,000
GBP
|
— |
| Increase (decrease) in cash and cash equivalents after effect of exchange rate changes | — |
50,347,000
GBP
|
— |
62,274,000
GBP
|
— |
| Cash and cash equivalents |
196,651,000
GBP
|
— |
146,304,000
GBP
|
— |
84,030,000
GBP
|