Bell will oversee and steer the groups’ lending portfolio and proposition with direct responsibility for product development, sales and business development.
He said: “It’s a real opportunity and responsibility to drive our combined lending proposition forward.
“Our key strengths of specialism, flexibility and personal service are unique and combine to support delivery of the biggest range of specialist mortgage and commercial lending to the intermediary market.”
John Eastgate, sales and marketing director, OneSavings Bank, added: “This development is the next logical step for the growing OneSavings Bank group.
“With Colin responsible for Kent Reliance and InterBay, we will be able to further develop our combined strengths and deliver the most coherent niche lending proposition to our customers.”