Hastings relationship key to the deal.
Group CEO Peter Blanc says the transaction, which is believed to be worth around £320m, will secure the broker's independence for the foreseeable future.
The long-rumoured deal is believed to be set to conclude in the next few days.
The move follows Dunedin’s 2016 investment in Kingsbridge.
Siân Barton and Aara Syed discuss the most popular stories on Insurance Age this week.
CEO Peter Blanc says broker will remain independent as bids from three private equity firms have been received.
Private equity owner Aquiline has completed a strategic review of the business.
New backer replaces former investor Summit Partners and follows Insurance Age revealing last month that the software house was seeking fresh investment.
Summit Partners invested in June 2010.
Bob Darling says organic growth continues as demand for advice remains strong.
The business, currently funded by Bowmark Capital, is seeking additional investment to secure its longer term acquisition pipeline.
The business is not looking to buy following investment from Inflexion.
Granite, which sits behind Acorn Insurance, specialises in niche motor cover.
Turnover and post-tax profit both rise.
Final set of accounts before takeover by private equity.
Two major players in the Northern Ireland market come together.
Darren Murphy explores how large M&A in the broker sector filters down into the regions.
Miles Smith and TUE Companies to keep own brands as separate businesses in expanded group.
Graeme Newman chats about cyber insurance, the benefits of being an MGA and the firm's strategy following its recent management buyout.
Documents show the Wilson price tag was £44.9m.
CEO Bob Darling pledges commitment to the franchise model as broker sets up team to help franchisees make acquisitions.
Brokerbility boss says 13 organisations want to speak about buying in.
Former LV boss Phil Bunker will chair the board as George Storey retires.
Move follows Apollo's purchase of Aspen.