The panel, scheduled to go live in September, will also include existing providers Liverpool Victoria (LV=) and Zurich.
Between them, the five providers account for approaching 40% of the market, and will bring to Openwork a number of comprehensive, award-winning protection products and services.
Openwork plans to work closely with the selected providers over the coming months to implement the panel.
Following its autumn launch Openwork advisers will be able to choose between operating the new panel and continuing with the existing Zurich single-tie proposition - whichever is in the best interests of their business.
Martin Davis, CEO, Openwork, says: “The launch of our new protection panel is a very significant development for Openwork and an important part of our ongoing drive to broaden and enhance the products and services we offer to our advisers and their clients.
“The inclusion in the panel of such respected names in the protection market demonstrates our commitment to this important area of the industry and our determination to become the leading adviser services network in the UK.”