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Sex workers evaluate reporting violence

Violence prevention and survivor support for and by sex workers: evaluation of a community-based intervention

Status
Active, not recruiting
Phases
Unknown
Study type
Observational
Source
ISRCTN
Registry ID
ISRCTN56423125
Enrollment
600
Registered
2025-09-03
Start date
2025-06-28
Completion date
Unknown
Last updated
2026-03-23

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Violence prevention and survivor support for and by sex workers Other

Interventions

National Ugly Mugs (NUM) is a violence prevention and survivor support for and by sex workers. NUM aims to improve rights, safety and inclusion of sex workers by facilitating sex workers to make decis
(2) community-based violence reporting system
(3) NUMchecker tool allowing sex workers to screen clients (by contact details, profile names and vehicle registration) against national database
and (4) casework for survivors of violence and linked engagement with referral services. We will use a participatory mixed-method, quasi-experimental design, informed by realist evaluation principle
(B) qualitative and quantitative process evaluation
(C) impact evaluation (pre and post cohort study with non-equivalent comparison group) measuring self-reported data on violence and mental health
(D) economic evaluation comprising costing of interventions and cost-effectiveness analysis
and (E) second dialogues and research into action

Sponsors

London School of Hygiene & Tropical Medicine
Lead Sponsor

Eligibility

Sex/Gender
All
Age
18 Years to 70 Years

Inclusion criteria

Inclusion criteria: 1. Be aged 18 years of age or older 2. Have sold sex in the last 6 months defined as received money in exchange for in person sexual service 3. Have sold sex in a city in the last 6 months (for example, Birmingham, Bristol, Brighton, Manchester, London, Glasgow, Hull) 4. Have capacity to consent 5. Be a new NUM member (defined as registered into NUM within the past 7 days) 6. Provide in-person sexual services 7. Work predominantly as an indoor sex worker

Exclusion criteria

Exclusion criteria: 1. Under 18 years 2. In secure services 3. Lack capacity to consent 4. Who do have not recent experience of selling in-person sexual services

Design outcomes

Primary

MeasureTime frame
The primary outcome for evaluating the impact of violence prevention interventions (alerts and NUMchecker) is self-reported violence in the last 6 months (enacted, threatened or attempted) by clients, other parties at work, police. This is defined as physical, including sexual, and emotional violence. Physical violence encompasses direct attack (being hit, attacked with a weapon or kidnapped) as well as theft, spiking (e.g. drugs put into drink), damage to personal property. Emotional violence includes verbal abuse (being belittled, humiliated, having abusive or insulting language such as racist remarks directed at you), being outed as a sex worker, stalking (online or in person). Sexual violence includes forced sex; touched against one’s will, removal of condom, and forced/tricked into providing a sexual service (e.g. unprotected sex) without consent or payment.

Secondary

MeasureTime frame
Secondary outcomes include intermediate outcomes such as fear of violence, adapted working strategies (cancellation and/or avoidance of clients; client screening, working with others, use of CCTV/security); awareness of reporting systems/support services, contact with services (sex worker specific/mental health/housing, drug treatment, welfare services). Longer-term outcomes include mental health - depression and anxiety and self-rated health measures (e.g. PHQ4, EQ5D-5L) that have been well validated in UK primary care and among sex workers and homeless populations including by our team.

Countries

England, Scotland, United Kingdom, Wales

Contacts

Public ContactLucy;Pippa Platt;Grenfell

;

lucy.platt@lshtm.ac.uk;pippa.grenfell@lshtm.ac.uk+44 (0)20 7636 8636;+44 (0)20 7636 8636

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Apr 3, 2026