Osborne Clarke's (OC's) UK partnership has elected London head Andrew Saul as its new senior partner, replacing outgoing postholder Tim Birt.

Saul was named head of OC's London office in January 2012. He will take up a four-year term in his new role at the start of January next year after he won a contested election.

The firm declined to reveal who ran against Saul for the role.

Saul joined OC as partner and head of corporate in 1996, leading the practice for seven years. He helped establish the firm's office in Silicon Valley and continues to represent a number of US-headquartered companies including Yahoo!, Dell, Quest Software, Electronic Arts and Activision. He plans to maintain a client-facing role and continue working on transactions.

Birt said: "I know that Andrew is a great choice, both for OC in the UK and for our wider international business. He'll bring his very considerable energy and poise to the role and it's good to know that you're handing on the baton to someone who understands and loves the firm so well."

Saul's predecessor Birt joined Osborne Clarke in 1987 with a brief to launch the firm's new City arm. He was made up as partner a year later in the firm's corporate practice. He was appointed as UK senior partner in 2006 after high-profile predecessor Leslie Perrin announced his decision to retire.

Birt will continue to contribute to the firm's specialised marketing and communications services unit and will lead the firm's European strategy in New York after his second and final term as senior partner comes to an end.

Birt led the firm's launch in Manhattan, its second representative office in the US, last month.

Saul will oversee the firm's operations alongside current managing partner Simon Beswick. A successor as London head has yet to be names.

Beswick said: "As a firm we have seen considerable change in the last eight years and I would like to thank Tim Birt for his leadership of the partnership during this period.

"Tim has overseen the internationalisation of Osborne Clarke. He has very effectively represented the partners' interests both internally through the partnership council and externally."