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Brief
Aegis Group was acquired by Dentsu Inc. (Mar 2013)

Aegis Group

Media Services & Market ResearchAgency

Aegis Group was a publicly traded holding company for a global group of media specialists, purchasing advertising space across newspapers, magazines, television, radio, and other outlets, while also providing extensive audience forecasting research.

Last updated Oct 5, 2026 by the ATDb Editorial Team

HQ
London, England, United Kingdom
Connections
16

AI-drafted from public sources9 sources cited

At a glance

Employees
10001+
Revenue
$2B+
Stock
AGS
5competitors1corporate family1acquisitions

About

One of the world's largest independent media services groups prior to its acquisition by Dentsu in 2013, with a significant global presence in media buying, planning, and market research.

Aegis Group was a publicly traded holding company for a global group of media specialists, purchasing advertising space across newspapers, magazines, television, radio, and other outlets, while also providing extensive audience forecasting research. Founded in 1989 by Peter Scott as a spin-off of the WCRS media buying division — itself centered on the French media business Carat — the company was officially renamed Aegis Group in 1990. Under Scott's leadership, Aegis steered away from full-service advertising toward specialization in media planning and buying, ultimately selling all remaining interests in full-service advertising in September 1992. Its media portfolio included brands such as Carat, Vizeum, Isobar, iProspect, and Posterscope, with capabilities spanning digital media planning and buying as well as a range of digital marketing services. Through iProspect, Aegis also built search engine optimization expertise, advising clients on maximizing organic search presence and expanding that capability globally. Aegis was acquired by Japanese advertising company Dentsu for £3.16 billion in a transaction completed on March 26, 2013, after which it was folded into the newly established Dentsu Aegis Network. Source 1: encyclopedia.com — Aegis Group plc Source 2: wikipedia.org — Dentsu International Source 3: thedrum.com — Aegis Group agrees to £55.2m deal for Chinese digital ... Source 4: adtechdaily.com — Isobar Acquires Search Engine Marketing Firm Aposition in ...

Business model

Agency

Target market

Enterprise

What they offer

  • Carat

    One of the world's largest media buying and planning agency networks, serving major global advertisers.

  • Vizeum

    Full-service media agency focused on integrated media planning and buying.

  • Isobar

    Global digital marketing and communications network.

  • Synovate

    Global market research division providing consumer insights and data (sold to Ipsos in 2011).

  • Posterscope

    Out-of-home media specialist agency.

  • Aegis Media

    Umbrella brand for the group's media agency operations.

Key features

Global media buying and planning at scaleIntegrated digital and traditional media servicesMarket research and consumer insights capabilityOut-of-home and specialist media expertiseMulti-market campaign management for multinational advertisers

Use cases

Global media planning and buying for multinational brandsDigital marketing strategy and executionConsumer and market research for brand strategyOut-of-home advertising campaign managementIntegrated cross-channel media investment

Customer segments

Multinational consumer goods companiesFinancial services advertisersAutomotive brandsTechnology companiesRetail advertisers

Tech & specs

Technology stack

Proprietary media planning toolsAudience data and analytics platformsDigital ad buying and programmatic systems

Security & compliance

GDPR

Deployment

Managed Service

API

No

Corporate history
  1. 2013Acquired by Dentsu Inc.
    Still operating as part of Dentsu Group Inc.
Connection details
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