Surface repair is an unregulated trade — anyone can set up as a surface repair specialist regardless of experience or training. Knowing what to look for helps you choose a company that will deliver the invisible result you are expecting.

Check for Accreditations

Which? Trusted Trader — companies approved by Which? have been assessed against criteria covering quality of work, customer service and business practices. This is the most consumer-relevant accreditation for residential customers.
Constructionline Gold — the standard required for commercial and public sector work. Companies with Constructionline Gold have been assessed against comprehensive supply chain qualification criteria.
Guild of Master Craftsmen — membership requires assessment of workmanship quality.
Trustpilot and Google reviews — read reviews carefully. Look for specific mentions of colour matching quality and invisible results, not just general satisfaction.

Questions to Ask

Can I see before and after photos of similar repairs? — a reputable company will have a portfolio.
Do you quote from photos or require a site visit? — professional companies quote from photos with no call-out fee.
What guarantee does the work carry? — all professional work should carry a workmanship guarantee.
Are you insured? — public liability insurance is essential for work carried out in people’s homes.