Gas Safe, NICEIC, Checkatrade — which trust badges actually convert?

Trust badges are the first thing a customer looks at on a trade website — before the price, before the testimonials, before they even read what you do. Their eyes go straight to the row of logos that signals 'this firm is legit'. Get those badges right and conversion climbs. Get them wrong (or worse, miss them entirely) and you lose to whoever did get them right.

We pulled six months of conversion data from 200+ trade sites running Voxinly. We tracked which trust badges they displayed, where, and how that correlated with booking rates. This is the ranked list.

The ranking

A few patterns jump out. Gas Safe is the trade-badge gold standard — its conversion uplift is double everything else for gas work. NICEIC mirrors it for electrical work. Google Reviews is the universal trust signal that crosses every trade. Checkatrade still beats Trustpilot for trade-specific work — the brand recognition among customers searching for tradesmen is higher.

Where to put the badges

Placement matters as much as which ones. From our heat-map data across customer sessions:

• Above the fold on the homepage — highest impact
• In the chat widget header (Voxinly does this automatically) — second-highest impact
• In the website footer — moderate, baseline credibility
• On the 'About us' page only — low impact, most visitors never go there

The chat widget header is a sneakily effective spot. Most websites bury badges in the footer; putting them where the customer is actively engaged (mid-chat) creates a stronger trust moment than a footer they've already scrolled past.

The paradox of too many badges

Counterintuitively, displaying too many badges hurts conversion. Sites showing 5+ badges in a row converted 11% worse than sites showing 3-4. The hypothesis from our customer interviews: too many logos starts to look like a stock-photo trade site, or worse, like the firm is trying too hard. 3-4 well-chosen badges signal 'we're properly accredited where it matters' without the 'salesy' overtone.

Verification links

Half of customers in our survey said they actually click a Gas Safe or NICEIC badge to verify the number. That means displaying a number that doesn't verify is worse than not displaying the badge at all. Always link your badge to the official register so a sceptical customer can confirm in two clicks.

Review-platform deep dive

Checkatrade vs Trustpilot

Both are legitimate review platforms but they serve different audiences. Checkatrade is trade-specific and over-indexed with older homeowners (the highest-spending residential customers). Trustpilot is general and over-indexed with younger digitally-native customers. For most British tradesmen, Checkatrade outperforms — but if your customer base skews under 35, Trustpilot may convert better. Best practice: display whichever has your higher rating, with at least 30 reviews. Below 30 reviews, the rating doesn't carry weight.

Google Reviews — non-negotiable

Every tradesman should have a Google Business Profile with live reviews. It's free, it's the most-recognised review format in the world, and it directly affects local SEO. Display the rating prominently on your website and inside your chat widget. A 4.8 star rating with 80+ reviews on Google is the single strongest credibility signal we measured.

Under-used badges to consider

TrustMark

Government-endorsed quality scheme. Recognition among consumers is still modest (41%) but the conversion uplift among customers who do recognise it is high. If you're eligible, it's worth registering. Particularly strong for sectors like external wall insulation, double glazing, and Green Homes Grant-adjacent work.

Which? Trusted Trader

Strong recognition among the over-50 affluent demographic. If your customer base is primarily homeowner over 50, Which? is worth the membership fee. Less impact below that demographic.

Badges that DON'T work

• Generic 'SSL Secured' / 'McAfee Verified' — irrelevant for trade
• Yell.com / Yelp / Bing Places — low brand authority in UK trade context
• Custom 'family run since 1985' badges — narrative belongs in copy, not badges
• Award badges no-one's heard of — 'Best Plumber 2023' from an unknown awarding body
• Anything not clickable to a verification source — looks invented

The honest answer for new tradesmen

If you've only been trading two years and haven't earned 80+ Google reviews yet, you can't fake your way to a trust badge wall. The honest move is: get registered with Gas Safe / NICEIC / OFTEC / whatever applies, display those trade qualifications, start collecting Google reviews aggressively (every job, ask, every job), and add review platforms once you've got 30+ on each.

A new tradesman with Gas Safe + 12 Google reviews displayed honestly will outperform a four-year tradesman with seven made-up badges and no review data.

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