David Collett will replace Bob Copleton as chairman of Congregational & General Insurance on a three-year tenure.
Collett previously worked for the Bradford-based ethical insurer as managing director for 13 years.
Collett said: “I am thrilled to have been asked to serve as chairman of the board at such a pivotal time in the history of Congregational and General.
“Since our launch 115 years ago, we have grown to become one of the most respected insurers in the marketplace and I will strive to make sure we are recognised as the top ethical insurer across the UK during my time as chairman.
“While managing director, I initiated and oversaw the transfer of assets from the company to the charitable trust and I am still convinced that our charitable giving and protection of traditional values enables us to stand out in the marketplace.
“I look forward to taking on the challenges that this role brings and seeing Congregational & General Insurance continue to grow.”
Collett's appointment will take effect as of 1 January 2007.