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The UK & Ireland Testing Board recognise the importance of continuous improvement in testing processes and, as such, support the Test Maturity Model integration (TMMi) as an independent guideline and reference framework for test process improvement.

Due to the limited attention given to testing in the various software process improvement models such as CMMI, TMMi was developed by the TMMi Foundation. It is positioned as complementary to  CMMI and, just like the CMMI staged representation, TMMi uses the concept of maturity levels for process evaluation and improvement.

TMMi is the test improvement and maturity model used by organisations to compare their maturity against. This may result in a plan for meeting the desired maturity level rating. Implementing the recommendation of the assessment enables organisations to derive many benefits and advantages, particularly around reducing risk, cost and time whilst improving the quality of software which meets the needs of the business.

The model looks at software quality management and testing at maturity levels (see picture below), with the starting assumption that all organisations start at level 1 of the maturity ladder. The more mature an organisation’s practices the higher level of maturity the organisation fulfils.


UKITB is the local chapter of the TMMi Foundation covering UK and Ireland, see: for more details and to download the model.

The following are available via the UK & Ireland service providers:

TMMi Professional training:

For anyone who wants to understand TMMi and learn to do process improvement in their own organisation
See for more details and for the latest syllabus.

Recommended prerequisite is ISTQB Certified Tester Foundation Level certificate

get certified
assessment method

TMMi assessments:

For organisations to assess their testing maturity level, See for more details

TMMi training for assessors:

On top of the TMMi Professional trainings, TMMi offer training for Assessors and Lead Assessors, see and for the process of becoming an assessor.

Become an assessor

TMMi accreditations:

For companies who want to be TMMi assessment service providers in UK and Ireland, contact us for more information.


The following companies are currently certified to deliver TMMi services in the UK and Ireland. Please contact them directly for TMMi services: