The WarmGuard gas boiler and central heating insurance is Underwritten by Ageas Insurance Limited which is part of the Ageas UK Group.

Ageas UK is a leading provider of award-winning Personal and Commercial Lines insurance solutions and Life Protection insurance in the UK.   Ageas distributes its products through a range of channels including brokers, IFAs, intermediaries, affinity partners and the internet as well as various wholly or majority-owned companies (Ageas Insurance Solutions, Ageas Protect, Castle Cover, Kwik Fit Insurance Services, RIAS, Tesco Underwriting and Text2Insure). Insuring around 8 million customers and working with a range of partners, Ageas UK is recognised for delivering consistent and high quality customer experiences. In 2010 total income was £1.035 billion.

Ageas UK continues to receive strong recognition from brokers, partners, Independent Financial Advisers and suppliers, evidenced by awards won so far in 2011.  Accolades include General Insurer of the Year and Business Sustainability Initiative of the Year (British Insurance Awards), Customer Care (Post Magazine Claims Awards), Motor Claims Initiative (Insurance Times Claims Excellence Awards), Best Use of IT in Insurance (Financial Services Technology Awards), and Underwriter of the Year (Protection Review Awards). Ageas UK is part of Ageas Group (formerly Fortis Holding SA/NV), an insurance group of significant scale with 20 million customers and 13,000 employees worldwide. In 2010, the group reported a turnover of nearly EUR 18 billion. Fortis Holding rebranded to Ageas in May 2010 reflecting its status as a standalone international insurance group, following the disposal of it banking assets in 2009. Ageas Insurance is authorised and regulated by the Financial Services Authority. FSA Registered number: 202039