John Bissell is the new man stepping into Tony Cornell's shoes at CGU.
Bissell, 37, and now broker partnership manager at CGU, takes over on October 1 as head of broker relations.
Bissell joined Commercial Union in 1980 and has held positions as a branch manager in Saudi Arabia and as manager of the group's Norwich office.
He has worked with Cornell for the past two years, and will be a popular choice amongst brokers.
"I'm thrilled," Bissell said. "It's a privilege to be taking over this job. I'm looking forward to it very much."
Neil McKenzie, CGU director of broker marketing, said there had been some excellent internal candidates but that Bissell had emerged as strongest.