Vouch
Global version of this answer UK founders

What questions should I ask in a customer discovery interview? in the United Kingdom

Updated · by Vouch · GBP pilot pricing

Short answer for UK founders

Ask only about past behavior, never about your idea. Best 5 questions: (1) walk me through the last time this problem hit you, (2) what did you try, (3) what did you spend on it, (4) who else was in the decision, (5) if this stayed broken for another 6 months, what would that cost you? Never ask 'would you use…' — the answer is meaningless.

UK buyers are politer in discovery calls than US ones, which makes leading questions especially dangerous — anchor every question in what happened last month, not what they'd hypothetically use.

Step-by-step

  1. 1
    Open with the last time it happened

    'Tell me about the last time <problem>.' You're mining for a concrete story, not an abstraction.

  2. 2
    Follow with what they actually did

    'What did you try? What did that cost you in time or money?' — behavior beats intent every time.

  3. 3
    Map the buying committee

    'Who else was in that decision?' A yes from the wrong person is a no in disguise.

  4. 4
    Size the pain in dollars or hours

    'If this stayed broken for 6 more months, what would it cost you?' — if they can't answer, this isn't a top-3 problem for them.

  5. 5
    Close with an ask, not a pitch

    'Would you be willing to try a paid solution next week if I built it for you?' — willingness to buy is the only interesting answer.

Where UK founders find their first 10 interviews

  • London and Manchester founder meetups plus sector-specific Slack groups.
  • LinkedIn outreach — the dominant B2B channel; keep the first message under 60 words.
  • Entrepreneur First, Seedcamp and SFC portfolio networks for warm intros.
Local funding context: SEIS/EIS investors and Innovate UK grant panels both ask for evidence of customer demand, so a scored assumption map plus signed pilots strengthens an application directly.

Typical paid-pilot deposit in this market: £400.

Frequently asked

Should I demo my prototype during the interview?

No. A demo anchors the conversation on you instead of them. If you must show something, do it in a separate follow-up call after the discovery interview.

How long should a discovery interview be?

20–30 minutes. Longer feels indulgent for the interviewee and produces marginal new information after the first 30 minutes.

Should I record customer discovery interviews?

Yes, with consent. Recording lets you focus on the human in front of you and extract quotes verbatim later. Vouch transcribes and scores assumptions automatically.

Does UK GDPR affect how I run validation interviews?

Yes. Get explicit consent before recording, state why you're processing the transcript, and delete it on request. Vouch's interview flow gates recording behind a consent step for exactly this reason.

Try Vouch

Run this playbook with the method built in.

Assumption mapping, interview scripts, live transcription and scoring, paid-pilot templates priced in GBP. Free to start.

Start free

Other markets