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Related party transactions - Additional Information (Detail) - GBP (£)
£ in Millions

6 Months Ended

Jun. 29, 2021

Jun. 30, 2021

Jun. 30, 2020

Disclosure of transactions between related parties [line items]

Revenue

£ 6,132.5

£ 5,582.7

^[1],[2]

Kantar [member]

Disclosure of transactions between related parties [line items]

Payments for further investment

£ 92.9

Numerator [Member]

Disclosure of transactions between related parties [line items]

Percentage of voting equity interests acquired

40.00%

USA [Member] | Compas [Member]

Disclosure of transactions between related parties [line items]

Revenue

£ 93.5

£ 49.7

[1]

During 2020, the Group announced the intention to combine Grey and AKQA into AKQA Group, and to bring Geometry and GTB into VMLY&R, and International Healthcare into VMLY&R and Ogilvy. As a result AKQA, Geometry, GTB and International Healthcare are now reported within Global Integrated Agencies, having previously been reported within Specialist Agencies. Prior year figure have been re-presented to reflect these changes.

[2]

Figures have been restated as described in the accounting policies.

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