Blue 449, which was originally founded as Walker Media in 1998 was already majority owned by Publicis Groupe since 2013.
Lewis Silkin also acted for Publicis Groupe on their original acquisition of their majority 75.1% stake in 2013.
The Lewis Silkin team was led by Corporate partner Paul Rajput, with support from Corporate associate Joe Lythgoe.
Commenting on the deal, Paul Rajput said:
"We were delighted to work with Publicis Groupe on this acquisition following on from the acquisition of their majority stake in 2013. This further enhances Lewis Silkin’s reputation as a leading mid-market M&A adviser in the marketing communications sector.”

