DATA EXPLAINED · UK ADULT SERVICES

London Has More Online Escort Ads Than Anywhere in the UK. What the Official Audit Says

63,000 listings, 41.7 million visits in a single month, and 92% of adverts carrying at least one warning sign. How to read the UK’s first official audit of the online sex market, and what it means if you book in London.

By The X Team · XLondonEscorts Blog · 6 October 2026

In February 2026, Eleanor Lyons, the Independent Anti-Slavery Commissioner, published the most detailed official examination of Britain’s online sex market to date: Behind the Profile: Sexual Exploitation and Trafficking Through Adult Services Websites. Her researchers counted every listing on 12 adult services websites during January, ran the adverts through the trafficking-risk tool that UK police use, interviewed 12 survivors, and reviewed the law. Seven months on, the government has still not responded to her recommendations, and most of what people now repeat about the market comes from headlines rather than the report itself.

What the commissioner counted

The headline scale of the market, from the report: 12 websites held nearly 63,000 listings at a single point in time in January 2026, and together attracted 41.7 million visits in that one month. The average age advertised across the listings was 25.3, and UK nationals were the largest cohort. The report’s most quoted finding is the risk score: 59% of adverts displayed three or more indicators of exploitation or trafficking, and 39% displayed four or more. The Guardian’s editorial reading of the same data put the share showing no warning signs at 8%, which means roughly 92% of adverts carried at least one flag.

Distributed across the 63,000 listings, 41.7 million monthly visits works out to around 660 visits per advert per month, or about 22 a day for an average listing. Spread across a year, it is roughly nine website visits for every adult in the UK. Visits are not unique visitors, so treat these as our own estimates of intensity, but they describe a market whose reach is thoroughly ordinary.FIGURE 1 : THE RISK DISTRIBUTION THE HEADLINES MISSED

Share of the ~63,000 adverts by number of exploitation indicators, per the IASC report and the Guardian’s reading of it

8%

33%

20%

39%

None

One or two

Exactly three

Four or moreSource: IASC, Behind the Profile (Feb 2026): 59% of adverts had three-plus indicators and 39% had four-plus; The Guardian’s editorial (4 Mar 2026) reports 8% showed no warning signs. The one-to-two segment is our reconstruction of the remainder. Indicators are screening signals, and the indicator table later in the piece takes each one in turn.

London is on top, mostly because London is big.

The report’s geography finding is the one this blog cares about. London recorded by far the highest concentration of adverts: nearly 10,000, roughly one in six of all adverts in the country, far ahead of Glasgow and Manchester, with the heat map also clustering the South East.

Set against population, the lead is smaller. London holds about 13% of the UK’s residents and about 16% of the country’s escort adverts, or around 112 per 100,000 people against a national rate near 93. London leads by roughly a fifth more than its population share would predict, a genuine but modest over-representation. The figures record where adverts are listed as based, which may differ from where the women are, and the count is a snapshot of 12 sites at one moment.FIGURE 2 : LONDON’S LEAD, POPULATION-ADJUSTED0%20% of UK totalLondon’s share of UK escort adverts · ~16%London’s share of UK population · ~13%Our calculation from the report’s “nearly 10,000” of ~63,000 adverts and ONS population shares (London ~8.9m of ~68.3m). Both figures are approximate. The gap between the dots shows London’s real over-representation: about one-fifth.

What a red flag is, and what it is not

The audit scored adverts with the Sexual Trafficking Identification Matrix, STIM, a tool developed by Dr Xavier L’Hoiry at the University of Sheffield with Northumbria and Copenhagen universities, law enforcement and charities. Sixteen UK police forces, two UK charities and four foreign forces use it, and it rates each advert low, medium or high risk for trafficking or exploitation. Thames Valley Police, the force leading its rollout, has scored 128 adverts with it, made 40 location visits, safeguarded dozens of people and opened five live criminal investigations.

Those last numbers are the honest context for the 92% headline. The flags that appear in an advert are statistical signals chosen because they correlate with exploitation in known cases: the same phone number across multiple ads, “new to the area”, price points far below the market, menus of broad services, references to drug use, claims of youth. Each one also has an innocent explanation. Workers relocate, and independents often price low when they are starting out. A flag raises the probability that something is wrong without being evidence about any specific person. Sex-worker groups have pushed back on exactly this point; the collective SWARM has published a critique of STIM arguing that indicator lists sweep independent workers into risk categories. That disagreement is live and unresolved, which is another reason to treat the score as a screening result.

For a client, the point is simpler: a market where almost every advert carries at least one screening flag is a market where doing no checking at all is a bad strategy.

How to read a listing like an auditor

The report’s indicator list doubles as a reading guide.FIGURE 3 : THE INDICATOR DECODER

Flags: IASC, Behind the Profile (Feb 2026). The last two rows are our synthesis of the report’s findings on platform design (weak verification, anonymous buyers, third-party profile control), offered as our analysis, separate from the audit’s own findings.

The offence that applies to clients. Buying sex is not in itself a crime in England and Wales. But section 53A of the Sexual Offences Act 2003 makes it an offence to pay for the sexual services of someone a third party has pushed into providing them by force, threats, coercion or deception, for gain. The law is explicit that it does not matter whether you knew. Ignorance is not a defence, which is one more reason the screening habits above are not optional extras. Brothel-keeping and controlling prostitution for gain are offences too, and one survivor interviewed for the report was trafficked through an escort agency, so no business model, directory, agency or independent, is automatically safe.

The market moved online while the arrests stayed on the street.

MyLondon obtained Metropolitan Police arrest figures through freedom-of-information requests and published them alongside the report. They show enforcement falling behind a market that moved online. Every street-era prostitution offence has collapsed in London over the past decade: arrests for placing adverts near telephone boxes fell from 73 in 2015 to one in 2025; arrests of buyers soliciting fell 80%, from 114 to 22; arrests of sellers loitering fell 97%, from 171 to five. Brothel-keeping arrests dropped from 47 in 2016 to 17 in 2025, and arrests under the 2003 Act’s controlling-prostitution offences fell from an annual average over 100 between 2015 and 2020 to just over 50 a year since. Meanwhile the online market concentrated in the capital, with nearly 10,000 adverts recorded at a single point in time.FIGURE 4 : LONDON PROSTITUTION ARRESTS, THEN AND NOW2015 / 1620251715Loitering / soliciting (selling)11422Soliciting (buying)4717Brothel-keeping (from 2016)731Phone-box advertsSource: Metropolitan Police arrest data obtained by MyLondon via FOI (Feb 2026). The era of card adverts in phone boxes ended as the market moved online; enforcement of the online layer has been minimal by comparison.

The harm behind the market is moving the other way. Referrals into the National Referral Mechanism for suspected victims of sexual exploitation rose 86% for women between 2020 and 2025, from 1,114 to 2,076 a year, and 61% for girls, from 504 to 811. UK girls made up 70% of girl referrals in 2024 and 2025, and the commissioner says the true figures are higher because the crime goes unreported.FIGURE 5 : SEXUAL-EXPLOITATION REFERRALS ARE RISING1,1142,076 (+86%)Women, 2020 vs 2025504811 (+61%)Girls, 2020 vs 20252020 baseline2025 countSource: National Referral Mechanism data as reported by the IASC and The Guardian (Feb 2026). Referrals are suspected victims identified and referred into support, so they set a floor for the true figure.

Seven months of silence

Lyons’ recommendations were direct: a public consultation on banning or regulating adult services websites, a new Modern Slavery strategy, renewed funding for a national policing unit (dedicated funding for the Modern Slavery and Organised Immigration Crime Unit ended in March 2026), strong age assurance, and trauma-informed support for survivors. As of October 2026, the government has published no response. The Guardian’s editorial called the recommendations a demand that ministers must act on, and the commissioner’s office has since published an interactive map that breaks the advert data down by country, region, county and parliamentary constituency.FIGURE 6 : WHERE THE FILE STANDS

Feb 2026
Report published: 63,000 listings audited across 12 sites

Ask
Consultation on banning or regulating ASWs; new strategy; policing unit funding

Mar–Sep 2026
No government response. Ofcom fines porn sites under the Online Safety Act but opens no ASW investigations

Live now
Crime and Policing Act 2026 commencing in stages; buyer-criminalisation clauses were debated but did not pass; constituency-level map publishedStatus as of 6 October 2026. The regulatory fight over these websites is unresolved, which is one reason knowing how to read a listing matters now rather than later.

Where the data lives

• The full report: Behind the Profile, PDF, Independent Anti-Slavery Commissioner, February 2026.
• The interactive prevalence map.
• The Guardian’s report on publication and its editorial of 4 March 2026; MyLondon’s FOI arrest data, published February 2026 by Callum Cuddeford.
• The University of Sheffield on STIM, and section 53A of the Sexual Offences Act 2003 at legislation.gov.uk.
• If you suspect someone is being exploited, the National Modern Slavery Helpline is 08000 121 700.

The audit found a market of 41.7 million monthly visits where the default assumption, for regulators and clients alike, can no longer be that every profile is what it appears. For the men who book in London, the useful response to that is fifteen minutes of checking: a consistent person, verifiable photos, stated limits, a price that adds up, and no sign of a third party behind the screen. The market is big, the red flags are common, and most of them are readable by anyone who knows what they are looking at.

Estimates labelled as our own (visits per listing, population-adjusted shares) are calculations from the cited official figures, which are themselves rounded (“nearly 10,000”, “nearly 63,000”). The 8% figure for listings showing no warning signs comes from The Guardian’s editorial reading of the report; the report itself publishes the 59% and 39% thresholds. The indicator table’s final two rows are our analysis, separate from the audit’s own findings.