The latest Q2 2026 mortgage network data from Network Consulting shows continued movement across the network sector, with adviser firms switching networks, contrasting growth rates among major players and a series of significant leadership changes reshaping the market. Among the larger mortgage networks, Stonebridge Mortgage Solutions continues to post strong growth, recording 63 firms joining year-to-date against 34 departures, delivering a net gain of 29 firms. HL Partnership (HLP) has also expanded, with 49 new firms joining and 23 leaving, resulting in net growth of 26 firms. Mortgage Advice Bureau, for example, has around 200 AR firms but almost 2,000 retail mortgage advisers, according to FCA data. Paul Day, founder and director of Network Consulting, said: “Overall, Q2 portrays a mortgage network market experiencing change on several fronts.