DLA Piper competition stalwart Mike Pullen has left the firm after 13 years as partner to join Stephenson Harwood.

Pullen is set to join Stephenson Harwood's competition practice next week. He was head of international trade at his former firm before he left in September.

Pullen worked at DLA Piper for 16 years, having joined in 1998 before his promotion to partner in 2001. He has advised several governments on domestic and international trade and investment policy.