Updated 10th June 2026
TrustMark Registered Businesses are expected to provide their customers with the appropriate level of financial protection
Bluedrop Services (NW) Limited
Cavity Insulation Guarantee Agency (CIGA)
Installsure
Home Insulation and Energy Systems Quality Assured Contractors Scheme (HIES)
Qualitymark Protection
Soltherm
SWIGA
The Installation Assurance Authority (IAA) Ltd
Alternative installer remediation in Find & Fix - Contacting Guarantee Providers
TrustMark is the Government Endorsed Quality Scheme that covers work a consumer chooses to have carried out in or around their home.
When a consumer chooses a TrustMark Registered Business, they are engaging with an organisation that has been thoroughly vetted to meet required standards and has made a commitment to good customer service.
