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Trade and other payables - Summary of trade and other payables, amounts falling due after more than one year (Detail) - GBP (£) £ in Millions	Jun. 30, 2023	Dec. 31, 2022
Trade and other non-current payables [abstract]
Payments due to vendors (earnout agreements)	£ 114.6	£ 98.1
Liabilities in respect of put option agreements with vendors	305.9	323.3
Fair value of derivatives	12.6	0.0
Other creditors and accruals	84.3	69.5
Trade and other payables	£ 517.4	£ 490.9

X

- Definition

The amount of non-current derivative financial liabilities. [Refer: Derivative financial liabilities]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2022-03-24
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-URIDate 2022-03-24

+ Details

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Balance Type:	credit
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X

- Definition

The amount of non-current trade payables and non-current other payables. [Refer: Other non-current payables; Non-current trade payables]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2022-03-24
-Paragraph 54
-Subparagraph k
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-URIDate 2022-03-24

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Balance Type:	credit
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X

- References

No definition available.

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X

- Definition

The amount of non-current payables that the entity does not separately disclose in the same statement or note.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2022-03-24
-Paragraph 55
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_55&doctype=Standard
-URIDate 2022-03-24

+ Details

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X

- Definition

Contingent consideration non-current payable to vendors (earnout agreements).

+ References

No definition available.

+ Details

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X

- Definition

Liabilities of put option agreements with vendors, non-current.

+ References

No definition available.

+ Details

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