NEW YORK and LONDON—Teneo Holdings, the global advisory firm founded in 2011 by Declan Kelly, Doug Band and Paul Keary, has acquired UK-based communications firms Blue Rubicon and StockWell. All members of the Blue Rubicon and StockWell senior management team will continue as part of the Teneo leadership team. Terms of the transactions have not been disclosed.

Both companies will report to Charles Watson in his capacity as chairman of Teneo International.

Blue Rubicon provides counsel to clients such as Coca-Cola, Facebook, Google, HSBC and the Qatar 2022 World Cup, on high-stake issues including succession planning, corporate restructuring, and post-merger integration. Founded 15 years ago the firm has been led by senior partner Fraser Hardie (pictured), CEO Gordon Tempest-Hay, partners Chris Jones and Fiona Joyce and today employs more than 225 people in London, Doha, Dubai and Singapore.

StockWell was founded in 2010 and is led by three managing partners: Brunswick veteran Tim Burt, former Maitland executive Philip Gawith, and Richard Holloway, former head of communications at SG Warburg. Headquartered in London with a staff of 30, StockWell specializes in providing boardroom level strategic communications advice to corporations and individuals.

Blue Rubicon had previously sold a majority stake to private equity firm LDC in a move designed in part to fund international expansion—and had subsequently opened offices in the Middle East and Asia.

Teneo has more than 275 employees working across 12 operating divisions focused on strategic communications, investor relations, investment banking, financial analytics, executive recruiting, digital analytics, corporate governance, government affairs, business intelligence, management consulting and corporate restructuring.

It operates out of 12 offices around the world across the Americas, Europe, the Middle East and Greater China. In January 2015, private equity firm BC Partners acquired a minority stake in Teneo.