About Mystery Slopper
Mystery Slopper helps people in the UK spot misleading advertising and online shopping claims, keep the right evidence and choose a sensible next step.
What we do
- We explain what to look for in common claims, such as "was" prices, countdown timers, reviews and "only 2 left".
- We use official regulator rulings to show how similar claims have been treated. Today that means published rulings from the Advertising Standards Authority (ASA), each linked to the full ruling on the ASA's website.
- We show every outcome, including complaints that weren't upheld.
- We don't rate businesses, publish verdicts on named firms or send complaints for you. This is general information, not legal advice, and we can't promise a refund.
Mystery Slopper is not affiliated with the ASA or any other regulator.
Our founder
Our founder is Ian Hughes, who has spent over 40 years in advertising and who is passionate about creating advertising and marketing that is good for consumers and which ensures fair and level competition.
Meet Sloppy, our AI mascot
Sloppy is the bucket in the mask. She is our AI mascot: her pictures, voice and videos are made with AI tools, and we say so wherever she appears. She points out claims worth a closer look. She never decides whether a business has broken the rules: only the ASA, the CMA, Trading Standards or a court can do that.
Who runs Mystery Slopper
Mystery Slopper is run by ASTERISK INVESTMENTS LTD, a UK company, company number 17273502.
- Office address: 16 Flansham Lane, Bognor Regis, West Sussex, PO22 6AB
- Registered office: 16 Old Pastures West Close, Bognor Regis, PO22 7RP
- Email: corrections@mysteryslopper.com
Getting things right
Our guides are written and checked by a person. If you spot a mistake, tell us and we'll correct it openly. Read our corrections policy.
Privacy notice · Terms · Corrections
General information for people shopping in the UK, not legal advice.