About Us

The Radius team has underwritten an array of specialty classes with a combined experience of over 30 years. We pride ourselves on having a uniquely qualified and capable team.


Rob Ashton

Rob has underwritten an array of specialty classes over almost twenty years as an underwriter.  Rob was previously the Head of Specialty at Hiscox Re, part of Lloyd’s Syndicate 33, Hiscox.  Rob is a market leader in cyber excess of loss treaty and a well-respected underwriter of political violence, personal accident, financial lines and nuclear reinsurance, as well as being the driving force behind the development of a portfolio of idiosyncratic treaty business around one-off, specialised classes of reinsurance and niche structures.


Jon Spence
Head of Underwriting

Jon joined Radius in October 2018.  Prior to this, he was a Casualty Treaty Underwriter at XL Catlin. Jon wrote a range of casualty classes including liability, cyber, professional & financial lines and motor across territories including the UK, Canada, Western Europe & Asia. Jon joined Catlin in 2010 as part of the underwriting graduate scheme, eventually specialising in reinsurance and completing his ACII qualification in 2012. He has a degree in Natural Sciences from Churchill College, Cambridge University.