Thomas International
Thomas International provides psychometric and aptitude assessments (behaviour/DISC, cognitive ability, personality and emotional intelligence) with an AI coaching layer, used for hiring, candidate selection and employee development.
HireAIScore rates Thomas International 48 out of 100 (grade F, Substantial gaps) under rubric v1.0, last reviewed July 17, 2026. Thomas International ranks 24 of 49 vendors rated in Assessment AI, against a category average of 48. That score is drawn from 17 evidence items across 7 rubric criteria for Thomas International — 11 with a cited source, 6 recording that nothing was located.
§ 01 - Company facts
- Legal name
- Thomas International Ltd
- Founded
- 1981
- Headquarters
- United Kingdom · GB
- Pricing tier
- Mid
- Market side
- Employer-side (AEDT)
- Categories
- AssessmentScreening
- Website
- thomas.co
These are company details, not findings. They are editable by a verified representative and carry no weight in the score, which is built only from the cited evidence below.
§ 02 - Score breakdown
§ Score breakdown
Category scoring
Weighted contribution shown to the right of each bar.
- 01
Article 11 Technical Documentation
Weight 20%54
+10.8 · category avg 53
- 02
Bias Audit Transparency
Weight 18%43
+7.7 · category avg 47
- 03
FRIA Support
Weight 15%33
+5.0 · category avg 32
- 04
Data Governance Disclosure
Weight 15%57
+8.5 · category avg 55
- 05
Human Oversight Design
Weight 12%51
+6.1 · category avg 55
- 06
Post-Market Monitoring
Weight 12%40
+4.8 · category avg 39
- 07
Customer Documentation
Weight 8%60
+4.8 · category avg 59
Category avg is the mean raw score on that criterion across the 49 Assessment AI vendors in scope of this rubric, this one included.
§ 03 - Strongest · weakest
Strongest category
Customer Documentation
Raw score 60 · contributes 4.8 to total.
60 against a 59 category average
Weakest category
FRIA Support
Raw score 33 · contributes 5.0 to total.
33 against a 32 category average
§ 04 - Cited evidence
Download diligence record→§ Evidence
Cited per category
Every score is backed by at least one cited piece of evidence.
Evidence ledger
- Items
- 17
- Documentation
- 11
- Absence
- 6
- With a source URL
- 11 of 17
- Source hostnames
- 1
- Fewest items
- 2
- Bias Audit Transparency
These figures measure how thoroughly Thomas International was reviewed, not how Thomas International performed — an absence row, recording that nothing was located, is counted like any other item.
Article 11 Technical Documentation
3 items54
- DocumentationCaptured Jul 17, 2026
A 'How our AI works' page describes Thom's proprietary-only data scope, code of ethics, psychologist vetting and a Guardrails AI keyword blocker, functioning as a lightweight responsible-AI/explainability statement.
- DocumentationCaptured Jul 17, 2026
Downloadable 'Science behind' whitepapers (Aptitude and Personality, Jan 2024) document the psychometric basis, developers and validity theory behind the assessments.
- AbsenceCaptured Jul 17, 2026
No ISO 42001 certification, formal AI model/system card, explainability statement, or instructions-for-use technical pack for the AI system was found on thomas.co or via web search.
Bias Audit Transparency
2 items43
- DocumentationCaptured Jul 17, 2026
Assessments are registered with the British Psychological Society and audited against EFPA standards, with claims of fairness testing 'across different groups,' but no bias/fairness report is downloadable.
https://www.thomas.co/assessments/psychometric-assessment-aptitude-tests
- AbsenceCaptured Jul 17, 2026
No NYC Local Law 144 AEDT bias-audit summary and no independent algorithmic bias audit (e.g., BABL AI, Warden AI, Holistic AI, ORCAA) were found on the site or in web search results.
FRIA Support
2 items33
- DocumentationCaptured Jul 17, 2026
A Data Protection Impact Assessment (DPIA) and Data Protection FAQs are published for deployers, but these are GDPR instruments, not EU AI Act Fundamental Rights Impact Assessments.
- AbsenceCaptured Jul 17, 2026
No EU AI Act Article 27 FRIA template or explicit deployer-obligation guidance was found on thomas.co or via web search.
Data Governance Disclosure
3 items57
- DocumentationCaptured Jul 17, 2026
Security & compliance hub lists ISO 27001:2022 (Dec 2025) and ISO 9001 certifications, an annual independent penetration test, an Information & Data Security Policy, and the Statement of Applicability.
- DocumentationCaptured Jul 17, 2026
A public 16-page ISO 27001:2022 Statement of Applicability (V2, Nov 2025) is downloadable, classified 'Public.'
- DocumentationCaptured Jul 17, 2026
Thom AI is stated to be trained only on proprietary Thomas profiles and assessment content, with commitments never to sell data and to anonymize improvement feedback.
Human Oversight Design
2 items51
- DocumentationCaptured Jul 17, 2026
Psychologists vet all Thom AI outputs, use is consent-based, and a Guardrails AI keyword blocker constrains responses; assessments are framed as objective decision support rather than automated decisions.
- AbsenceCaptured Jul 17, 2026
No in-product human-override controls, audit logs, or per-jurisdiction configuration toggles are described publicly on thomas.co.
Post-Market Monitoring
2 items40
- DocumentationCaptured Jul 17, 2026
An annual independent penetration test (Security Assessment, Apr 2026) and ISO 27001 surveillance provide ongoing security assurance, with security documentation available on request.
- AbsenceCaptured Jul 17, 2026
No public status page, vulnerability-disclosure / bug-bounty program, model-update changelog, or continuous-monitoring dashboard was found on the site or via web search.
Customer Documentation
3 items60
- DocumentationCaptured Jul 17, 2026
Comprehensive public product pages cover the assessment suite (DISC/PPA, GIA aptitude, HPTI personality, TEIQue emotional intelligence) and the Thom AI coach.
https://www.thomas.co/assessments/psychometric-assessment-aptitude-tests
- DocumentationCaptured Jul 17, 2026
A public security & compliance hub provides technical FAQs (Assess Accredited and Assess & Connect, Mar 2026), policies, certifications and insurance documents.
- AbsenceCaptured Jul 17, 2026
No NYC Local Law 144 or EU AI Act deployer/compliance guidance and no public Data Processing Agreement were found on thomas.co.
§ 05 - Editorial notes
Company overview
Thomas International (trading as Thomas; thomas.co) is a UK talent-assessment provider founded in 1981 and headquartered in Marlow, Buckinghamshire, backed by Palamon Capital Partners. Its psychometric suite - Personal Profile Analysis (DISC behaviour), the General Intelligence Assessment (aptitude), HPTI (personality) and TEIQue (emotional intelligence) - is used for hiring, selection, development and team-building across 60+ countries, with more than two million assessments completed each year. The assessments are registered with the British Psychological Society and built to EFPA standards, and since 2024 the platform includes 'Thom,' an AI coach that interprets a person's behavioural profile.
Regulatory exposure
Thomas's assessments are statistically-scored tools used to substantially assist employment decisions, placing them within the EU AI Act Annex III 'employment' high-risk category and within scope of NYC Local Law 144 (AEDT bias audits) when used for NYC-based roles. The company evidences strong general information-security governance - ISO 27001:2022 (Dec 2025) and ISO 9001, an annual independent penetration test, and a publicly downloadable Statement of Applicability - alongside psychometric fairness accreditation via the BPS/EFPA. However, it publishes no NYC LL 144 bias-audit summary, no independent algorithmic bias audit, and no EU AI Act deployer or FRIA materials, so much of its AI-specific regulatory readiness is undocumented in public.
Path to a higher score
The largest gains would come from publishing an algorithmic bias / adverse-impact audit - ideally an NYC LL 144-style public summary or an independent audit by a firm such as Warden AI or Holistic AI - with downloadable fairness statistics for each assessment. A formal AI system card and explainability statement for Thom, plus ISO 42001 certification, would lift the technical-documentation score, while EU AI Act deployer guidance and a FRIA template would move the currently near-absent FRIA category. Adding a public status page / vulnerability-disclosure channel and documenting in-product human-override, audit-log and per-jurisdiction controls would strengthen the post-market-monitoring and human-oversight categories.
§ Regulatory frame
What applies to assessment ai.
Assessment is the most-regulated surface in AI hiring. NYC LL 144, EEOC and OFCCP frameworks, Illinois HB 3773, and EU AI Act Annex III §4 all apply, with overlap on bias-audit obligations.
§ Compare
Build any comparison→Thomas International against its nearest-scoring peers.
In Assessment AI.
§ Others rated in Assessment AI
All assessment vendors→Ranked 24 of 49 by weighted total under rubric v1.0. The ordering is arithmetic on the rubric and carries no view on which tool suits a given hiring process.
- 21Sova Assessment48F
- 22VidCruiter48F
- 23The Predictive Index48F
- 24Thomas InternationalThis profile48F
- 25Hogan Assessments47F
- 26Gloat47F
Conflicts of interest
No vendor pays for placement, scoring, or removal. Casework - the consulting firm that operates this directory - provides paid services to some vendors. Any active or recent (within 24 months) commercial relationship is disclosed on the affected vendor profile and the review is reassigned to an independent reviewer. See the full policy on About.
Casework has no commercial relationship with this vendor.