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Approved Services

These are the services which are currently Approved by tScheme (Listed in order of initial Grant of Approval). Use the ‘More’ links to find detailed Approval information for each service.

Service Provider
Service Name
Certificate Factory (UK Managed PKI) more
Managed PKI Security
more
SMKI — Device Certification Authority service
more
Infrastructure Key Infrastructure Certification Authority service
more
SMKI — Organisation Certification Authority service
more
FOC S1SP Certification Authority service
more
MOC S1SP Certification Authority service
more
Date Initially Approved
8 March 2002
27 May 2002
9 August 2016
9 August 2016
9 August 2016
12 December 2020
18 October 2023
Last Renewed Date
January 2026
May 2025
May 2025
May 2025
May 2025
November 2025
November 2025

Services pending Approval

These are the services which although currently Approved by tScheme (Listed in order of initial Grant of Approval) are more than a month late but less than three months late in getting their Approval renewed. Use the ‘More’ links to find detailed Approval information for each service.

Service Provider
Service Name
Date Initially Approved
Last Renewed Date

Services with delayed re-Approval

These are the services which are currently Approved by tScheme (Listed in order of initial Grant of Approval) but are more than three months late in getting their Approval renewed. Use the ‘More’ links to find detailed Approval information for each service.

Service Provider
Service Name
Date Initially Approved
Last Renewed Date

What the tScheme Approved Service Mark signifies

When a trust service carries the tScheme Mark, you can be secure in the knowledge that:

    • the service has been thoroughly evaluated against rigorous criteria by independent experts;
    • the service provider has agreed to keep to these criteria;
    • the service provider subscribes to the tScheme Code of Conduct;
    • the service provider has agreed to act promptly and fairly to remedy faults.

For each service, tScheme approval is regularly reviewed and may be withdrawn.

This Grant of Approval does not affirm or endorse any claims of conformance to standards or adherence to guidelines not explicitly listed as forming part of the service assessment.

The tScheme Code of Conduct

Participants in the electronic trust services industry strive:

    • to act in an honest, fair, reasonable and trustworthy manner;
    • not to bring electronic trust services into disrepute;
    • to provide clear information about what each electronic trust service provides, including limitations and exclusions, to those who rely on that service;
    • to meet service commitments and obligations;
    • to be proactive in identifying and correcting faults and deficiencies in electronic trust services;
    • to operate in accordance with appropriate standards;
    • to act promptly in resolving complaints relating to electronic trust services.

Why tScheme approval?

It’s the mark which says your service meets the highest standards of trust.

Our members

We’re a member-led not-for-profit organisation.

Insights

A collection of white papers and presentations from tScheme.

Getting tScheme approval

Approval usually takes at least three months, but it can be quicker.

Schemes and Profiles

Providing guidelines and criteria for organisations to develop their trust services.

What we do

Approval for organisations in the trust service provider sector.

tScheme Limited (by Guarantee) Registered in England No. 4000985. Registered Office: Mulberry Grove, PO Box 3653, Wokingham, Berkshire RG40 9NN

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