The two brokers firms are both based in Brighton and sell insurance products across Surrey, Sussex and London. Both firms will remain in their existing offices and keep their own branding.
Greens CEO Duncan Coleman said: “These two quality businesses with a strong heritage are an excellent fit for Greens and add considerably to our south eastern region footprint.
“All of us at Greens warmly welcome Chris Williams, MD at RTW, Leo Hetherington, MD at NIB and their teams and look forward to assisting them to rapidly accelerate their growth post purchase.”
He added: “I am proud to be at the helm of RTW as it enters a new and exciting chapter. The business has traded independently for 70 years but the time is right to become part of a bigger, highly ambitious group where we can take advantage of GRP’s scale, broaden our product range and further enhance the service for our clients through our dedicated team.”