Customer testimonials provide credible social proof that can help UK startups build trust with early customers and support B2B sales conversations. When collected and presented correctly they demonstrate real value without breaching advertising rules set by the Competition and Markets Authority and the Advertising Standards Authority.
This guide explains how to gather testimonials in video, written and case study formats, how to use them across your website, sales materials and social channels, and the steps needed to stay compliant with UK standards.
Why testimonials matter for early-stage UK founders
Testimonials show potential customers how your product or service has solved a real problem. For e-commerce sellers and B2B startups this evidence can reduce hesitation during first purchases or longer sales cycles. They also help during pricing conversations by illustrating the return buyers have seen.
UK advertising rules require that claims in testimonials must be truthful, not misleading and reflect the typical experience of customers. You must hold evidence to support any specific statements used in marketing. Always obtain permission before publishing and keep records of consent.
Collecting written testimonials
Start by identifying customers who have achieved clear outcomes. Send a short email or message two to four weeks after they begin using your product. Ask open questions such as: What problem were you trying to solve? What changed after you started using our service? Would you recommend us and why?
Provide a simple form or direct reply option. Include a sentence explaining how you plan to use their words and ask for explicit permission to publish their name, company and location if relevant. For B2B customers, confirm whether they prefer a job title or company name shown. Store consent records safely. Edit only for clarity and length after getting approval for any changes.
Written testimonials work well on website product pages, checkout flows and proposal documents. Place them near calls to action but avoid positioning them to imply guarantees.
Creating compliant video testimonials
Video carries more weight because viewers can see and hear a real person. Offer to visit the customer or arrange a short remote recording if they are comfortable. Prepare three or four questions in advance that match those used for written feedback.
Record in good light with clear audio. A smartphone on a tripod is often enough. At the start of the recording ask the customer to state they are happy for the footage to be used in your marketing. Keep the raw file and the signed consent form or email.
Edit only to remove long pauses or unrelated content. Do not add music or effects that could appear to exaggerate the message. Include captions for accessibility. On your website host the video yourself or use a platform that allows you to control where it appears. Display it alongside a written summary that matches what is said.
Developing case studies
Case studies combine background, the challenge, your solution and the measurable improvements seen by the customer. They suit B2B sales where buyers need detail before committing.
Contact a cooperative customer and propose a joint case study. Share a draft structure: one paragraph on their business, the specific problem, how they used your product, and the results achieved. Ask them to verify every claim. Where results are quantified, keep the exact figures they provide and avoid generalising beyond their experience.
Format the finished piece as a downloadable PDF with their logo (with permission), your branding and clear dates. Publish a shorter web version with the same text. Include a disclaimer that results may vary and that the case study reflects one customer’s experience. Update case studies if the customer’s situation changes significantly.
Meeting UK advertising standards
The ASA and CMA require that testimonials are genuine and not selectively edited to mislead. You cannot imply that all customers will achieve the same results unless you have evidence that this is typical. If a testimonial contains specific claims about earnings, time saved or other benefits you must be able to substantiate them.
Always show the customer’s name or handle unless they request anonymity. If using a review from a third-party platform such as Trustpilot or Google, link directly to the original source. Check platform terms regularly as rules on review collection can change. For paid or incentivised reviews, state clearly that the customer received a free product or service in exchange for feedback.
Review all marketing materials containing testimonials before publication. Keep a file with the original feedback, consent record and any correspondence. These steps protect you if a complaint is made to the ASA.
Putting testimonials to work across your startup
Use written quotes on landing pages, in email sequences and on social media posts. Rotate them so the same text does not appear repeatedly. In sales calls or proposals, reference a relevant testimonial and offer to share the full case study.
For customer retention, share new testimonials in your newsletter to remind existing users of the value they receive. During pricing conversations, a short video from a similar customer can illustrate why the investment is worthwhile. On product pages, place testimonials below the features list rather than at the top so they support rather than replace your own claims.
Monitor which formats generate most engagement. Simple written quotes may convert better for low-value e-commerce purchases while video and case studies support higher-value B2B deals. Adjust your approach based on your own results.
Maintaining a steady flow of fresh testimonials
Make collection part of your regular customer journey. After a successful delivery or milestone, send a polite request for feedback. Offer a choice of formats so customers can pick the one that suits them. Thank every respondent even if you cannot use their words.
Segment requests by customer type. E-commerce buyers may respond quickly to a short form while B2B clients may prefer a scheduled call. Respect those who decline and do not follow up repeatedly. Aim for a balance of formats so your marketing materials do not rely on a single style or customer.
Loomworks in West Yorkshire supports selected early-stage founders with free desks and mentoring that can help refine how you gather and present customer evidence as your startup grows.
Frequently asked questions
Do I need written permission to use a customer testimonial?
Yes. Record explicit consent that states how and where you plan to use the feedback. Keep the email, form response or signed release. This protects you and meets ASA expectations around truthful advertising.
Can I edit a testimonial before publishing it?
You may shorten or correct grammar provided the meaning does not change and the customer approves the final version. Never alter claims or add words that make the experience sound better than described.
Are video testimonials subject to the same rules as written ones?
Yes. Every claim made on camera must be truthful and typical. You must keep the original recording and consent. Captions should accurately reflect what is said.
How recent should testimonials be?
Recent feedback is more persuasive. Aim to refresh your collection every 12 to 18 months. Older testimonials can still be used if the product has not changed significantly, but you should note the date.
What should I do if a customer later asks to remove their testimonial?
Remove it promptly from all channels. Keep a record of the removal request. This maintains good relationships and reduces the risk of complaints about consent.
Related reading: Essential customer experience metrics for UK ecommerce founders, Negotiation tactics for B2B sales in the UK market, Email marketing strategies to improve customer retention in the UK. Browse all sales & customers guides or apply to Loomworks.