MX secures Aviva capacity, unlocking a major growth opportunity in the UK insurance market

London, UK – 21 October 2025 – MX, the underwriting pillar of Specialist Risk Group (SRG), announces a new strategic multi-year delegated distribution agreement with Aviva to support Trilogy Underwriting, generating over £100m in gross written premium, enhancing MX’s London Market capability and accelerating its growth ambitions across the UK

With a growing UK & Ireland Property & Casualty footprint, MX now offers SME and Mid-market solutions to broker partners across the UK. The Aviva capacity significantly bolsters MX’s London Market offering, ensuring stability and scalability while enabling the business to pursue growth opportunities with continued underwriting integrity and consistency.

MX will engage its broker network in the coming days to outline how the new capacity enhances products, service and outcomes for stakeholders.

Ian Cook, Managing Director at MX, commented:

"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, said:

“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.”