Middlesex have signed Tim Murtagh, the former Surrey seamer, on a two-year contract.
He becomes the latest acquisition for Middlesex as they aim to bolster their bowling attack and joins other new signings, Chaminda Vaas, Murali Kartik and Richard Johnson in a new look attack at Lord's.
Murtagh, who suffered an injury-hit 2006 and played just two Championship matches, said: "I have enjoyed my time at Surrey immensely and take with me great memories from on and off the field but I felt, with the number of high-class spinners on their staff and the way the team is made up, my opportunities and contributions in the future would be limited.
"With interest from a number of other counties, Middlesex were the standout option for me, with the chance to play more four-day cricket and to play my cricket at Lord's a huge attraction. I can't wait to link up with Ed Smith and the boys next season."
John Emburey, Middlesex's director of cricket, added: "As an all rounder he will add valuable depth to our side. We welcome Tim to the club and wish him every success."
Surrey's captain, Mark Butcher, said: "Tim has been a great servant to the club both on and off the field for many years. His attitude has been exemplary and his ability to control the white ball in one-day cricket has been a huge asset to the team over the past few years. He will be missed at Surrey but we wish him all the best at Middlesex."