TransUnion International UK
What Is A TransUnion International UK CIFAS Marker?
A TransUnion International UK CIFAS marker is a fraud-risk record connected to application, account, product, transaction, affordability, or fraud investigation records. It is not a normal credit issue. It is a fraud-risk filing on the National Fraud Database and should be reviewed against the CIFAS category used, the records held by TransUnion International UK, and the evidence relied on when the marker was filed.
Research identifies TransUnion International UK Limited as the relevant legal entity for TransUnion International UK, trading as TransUnion, company number 03961870, FCA reference 737740, ICO registration Z5169270. TransUnion legal/statutory report terms confirm company, office and FRN 737740; ICO confirms Z5169270. Relevant published Ombudsman or regulator material includes: https://www.financial-ombudsman.org.uk/decision/DRN-5334814.pdf.
In a TransUnion International UK case, the marker may relate to:
- The application or onboarding process
- Affordability, income, or supporting information
- Transaction, account, or product records
- Identity or fraud prevention checks
- How the product, account, or facility was obtained or used
The key point is simple. TransUnion International UK must be able to justify the marker with evidence, not suspicion, assumption, or a general account concern.

