What is Mystery Slopper?
Mystery Slopper is a UK consumer learning service. It helps people check online shopping claims, keep the right evidence and choose a sensible next step.
Practical help for online shopping problems
Spot the slop. Know what to do next.
Mystery Slopper helps you check online claims, keep the right evidence and choose a sensible next step when shopping in the UK.
UK focused · Evidence led · Human reviewed · General information, not legal advice
The short answers
What is slop?
Slop is an online claim, advert or selling tactic that deserves a closer look. It may be misleading, unsupported, unfair or simply unclear. Evidence decides what happens next.
Does Mystery Slopper rate or name businesses?
No. The public beta does not publish ratings, verdicts or investigations of named businesses. It explains what to look for and what to keep so you can decide what to do.
Is this legal advice?
No. Mystery Slopper gives general information for people shopping in the UK. For advice about your own situation, speak to Citizens Advice or a qualified adviser.
Start with what happened
What went wrong?
Pick the one that sounds closest. Each has a first thing to do today, before you decide anything else.
The price grew at checkout
First step: Screenshot the first price you saw and the final total, including every fee added along the way, before you pay.
The reviews look too good
First step: Look beyond the stars. Read the most recent and the lowest reviews, and note whether they repeat the same wording.
The countdown will not stop
First step: Note the time the offer claims to end. Check the page again later and record whether the price or timer really changed.
I cannot cancel a subscription
First step: Find the terms you agreed to and your payment records. Write down every cancellation attempt with its date and time.
My order never arrived
First step: Keep the order confirmation, any delivery updates and every message with the seller in one place.
It is broken or not what I ordered
First step: Take clear photos of the item and packaging now, and compare them with the description and pictures you were shown.
I do not know who is selling
First step: Look for the seller’s business name and a geographic address. If the page does not say, note that as a gap.
The shop will not answer
First step: Keep a dated list of each message you sent, how you sent it and any reply. Put your request in writing.
Fight slop in three moves
Notice it
Look at the exact claim, price, timer, review or promise that bothered you.
Check it
Keep the evidence and look for what is missing, unclear or changed.
Act on it
Choose a sensible next step, such as asking the seller in writing or getting advice.
Quick checks
Questions worth asking
There are no right or wrong answers here and no safe or scam verdict. “I don’t know” is a useful answer: it tells you which detail to look for next.
Who is really selling?
- Does the page give a business name?
- Is there a geographic address, not just an email address?
- Is it a business or a private individual on a marketplace?
If you cannot tell, note it down. You may need one more detail before choosing a next step.
Do these reviews need a closer look?
- Are many reviews posted close together with similar wording?
- Does the page say how reviews are collected or checked?
- Do the lowest reviews describe the same problem?
If you cannot tell, note it down. You may need one more detail before choosing a next step.
What should I check about this timer?
- Does the countdown restart when you reload the page?
- Is the ‘was’ price shown anywhere else, or only here?
- Would you still buy it at this price without the timer?
If you cannot tell, note it down. You may need one more detail before choosing a next step.
How Mystery Slopper works
We explain the evidence.
Signals are things to check, not automatic proof that something is wrong.
We show the next useful step.
We do not file or send complaints for you, and we do not contact businesses on your behalf.
We keep it reviewable.
Every public page is dated and approved by a person before it is published. We correct mistakes openly.
Mystery Slopper is in public beta. It started life as the private SlopPilot alpha, and investigations remain invitation-only while we test evidence, privacy and human-review controls.
Already invited to the alpha?
Use the private link in your invitation, or open alpha access. The alpha is invitation-only and separate from this public site.
Alpha access