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Key clients Barclays, Anheuser-Busch InBev, Direct Line
In the global PR rankings, it registered $180.9bn (£113.1bn) worth of deals. In Europe, Brunswick accounted for deals worth $111.1bn (£69.4bn), while in the US it clocked up $118.5bn (£74.1bn). It was also second globally by volume, with 130 deals.
Key work included advising Anheuser-Busch InBev on its $20.1bn (£12.6bn) move to take full control of Grupo Modelo, the Mexican brewer in which it has a 50 per cent stake.
Brunswick also advised RBS on its float of insurance arm Direct Line, which valued the firm at £2.6bn in October.
It won work from UK department store group Debenhams, which hired it to handle retained financial PR. Agency founder Alan Parker became executive chairman to focus on more client work, while Susan Gilchrist became group chief executive, based in New York.