Teneo has acquired UK-based PR firms Blue Rubicon and StockWell to bolster the firm's existing operations in the country and reach throughout Europe.

Teneo CEO Declan Kelly called the deals a "transformational moment" for the firm, which now claims one of the largest strategic communications practices in Europe.

Fifteen-year-old Blue Rubicon counts 225 staffers in London, Doha, Dubai and Singapore, and a client base spanning blue chips like McDonald's, O2, Facebook and Lloyds Banking Group.

Stockwell, founded in 2010 with a corporate PR focus, has a staff of 30. Clients have included Alcatel Lucent, Nissan, Banca Intesa and Jaguar Land Rover. The firm was started by Brunswick alum Tim Burt and Philip Gawith of the Financial Times, both of whom join former FTSE head of communications Richard Holloway as managing partners.

Teneo International chariman Charles Watson will oversee the new additions, which will be integrated and co-located in London with Teneo.