MX expands London market capabilities through multi-year partnership with Aviva

MX, the underwriting division of Specialist Risk Group (SRG), has entered into a strategic multi-year delegated distribution agreement with Aviva to support Trilogy Underwriting.

This partnership is expected to generate over £100 million in gross written premium, strengthening MX’s London Market capabilities and accelerating its growth across the UK.

With an expanding Property & Casualty presence in the UK and Ireland, MX now provides SME and Mid-market solutions to broker partners nationwide.

The addition of Aviva capacity significantly enhances MX’s London Market offering, delivering both stability and scalability while supporting disciplined growth with consistent underwriting standards.

In the coming days, MX will engage its broker network to demonstrate how the new capacity improves products, service, and outcomes for all stakeholders.

Ian Cook, Managing Director at MX, said: “Our partnership with Aviva marks a significant milestone for MX, reinforcing our position as a leading MGA in the UK market. We are excited about the opportunities this strategic alliance presents, and we remain steadfast in our commitment to delivering exceptional value to our broker partners and clients.”

Dave Martin, Managing Director, UK Commercial & Chief Distribution Officer at Aviva, added: “At Aviva, we are pleased to be partnering with MX who have demonstrated a deep sector expertise and proven track record of delivering underwriting profit focused on customer value, bringing complementary capabilities that align with our distribution strategy and growth ambitions.

“Today’s announcement forms part of our broader, strategic relationship with SRG. Together, our mutual focus on protecting customer outcomes whilst achieving underwriting returns and sustainable growth will drive future success.”