With only a few weeks of his notice to go, leading advertising partner Tim Birt has decided not to leave Osborne Clarke for Olswang after all. A jubilant Leslie Perrin, managing partner of Osbornes, explained: 'He has always said that there were only two firms he ever wanted to work at, Osborne Clarke and Olswang. In the end the wrench of leaving became too much for him. We are absolutely chuffed to bits about it.' Olswang had intended to make Birt a partner in its corporate department to boost the corporate side of its advice to media companies.