Experts in management and leadership best practice ...

We improve strategic and operational performance for major organisations based on our expertise in management and leadership best practice.

Serving a broad range of sectors including Telecoms, Technology, Energy, Defence and Infrastructure Development. We help clients turn their strategic priorities into results, getting the most out of their processes, people and knowledge through a systematic, results oriented approach called Performance Leadership. Fundamentally, we increase the effectiveness of management and leadership teams …


Evidence based decision making …

Whilst there is talk about fake news and isolationism, performance leaders know that fact based decision making and collaboration lead to benefits for all stakeholders.

Read our latest news and learn more about our client success stories that illustrate these benefits …

Performance Leadership – the organisations central nervous system …

Developed from best practice, tried-and-tested over time the system provides a robust ‘governance’ system involving everyone in a management and leadership process of continuous checking, adjusting, balancing and improvement. Performance Leadership can be thought of as the organisations central nervous system, the hub that coordinates activities constantly adapting and developing the organisation and its people to help make them agile, fit and safe as they move forward.

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Read our Client Success Stories

Learn how we have worked with clients for over two decades to achieve higher levels of performance and long-lasting results through our client success stories.

TRIMENTIS turns priorities into results, and each client success story illustrates how we have helped define client priorities, what approach the team used and results the client achieved.

Our Clients are some of the world’s leading organisations who entrust us with their most sensitive and valuable information. Our track record speaks for itself. Faced with the challenge of Today’s Priorities, it is critical to enhance organisational performance at all levels. Management and Leadership teams need a rigorous,  systematic and sustainable methodology to …

  • Clarify strategic priorities – confirming the organisations purpose; developing commitment, motivation and establishing effective collaboration

  • Translate strategic priorities into ongoing operations – building operational capabilities, driving accountabilities and monitoring performance at all levels

  • Systematically exploit cost, time and quality improvements – developing lean capabilities through innovation and sigma based change

What Our Clients say

Money well spent; really I am not just saying that. You really do inspire confidence and deliver effective messages.

Health and Safety Manager, European Power Company

A complex task delivered on time and on budget; thank you for helping to clarify our way forward as a business. At a personal level I have also learnt a great deal from you.

Head Business Development, Rail Infrastructure Strategy Development

I learnt a great deal from TRIMENTIS about how to turn my sense of what the future could be into a strategy that captured the attention and enthusiasm of my colleagues.

Director, Health, Safety and Environment, International Infrastructure Construction

Until we were taken through this process, we hadn’t fully appreciated the potential for our business. This experience has instilled a new excitement in the team although I must say it is tinged with some trepidation.

General Manager, Business-to-Business Market

Our business plan was to an impressive City investors standard that enabled our internal stakeholders … my bosses … make their critical investment decisions confidently, job done thank you!

Director Rail, Business Unit within an International Group

I appreciated the non-confrontational yet rigorous manner in which this study was undertaken. Thank you for delivering the result quickly and professionally.

CEO, International Business headquartered in the UK

We carried the changes through positively, managing the conflict between our internal customer satisfaction and initial delivery, establishing a new era of trust versus the control that went before.

Director Human Resources Operations, Global Wireless Carrier

I cannot overstate how profound this journey has been for me. I can only thank my personal coach for the care and insight they have brought to this. Truly life changing, thank you.

Senior Manager, Major International Organisation

We have enjoyed an excellent working relationship and you have made a significant impact on our performance as a team. The bottom line is worth over £10 million to us. I am very grateful for the experience.

DIrector Customer Services, National Telecomms Operator

This important result in our CAT3 supplier assessment will not only lead directly to a positive contribution to the bottom line, but will also have a tangible lasting impact on our effectiveness as an organisation.

Senior Manager , Major International Engineering and Construction Group

We were impressed that you managed to get nearly 100% attendance at the review meetings although certain findings have not sat well with some of our senior managers. This feels like a really good opportunity to kick-start our efforts.

Group Head Change Management, Diverse Business serving a number of Public Sector Organisations

In hours we accomplished what normally takes weeks of meetings. We developed a clearer vision about what our project was to achieve and this was more widely shared than normal.

Commercial Director Civil Engineering, International Engineering and Construction Group

This initially inflicted a lot of pain on the business as we literally shut down whole sales teams to focus our efforts on the strategic priorities. Time has proven our severe decisions to be the right ones and now we can all look forward to a more stable future together.

Managing Director, Division within the large International Group

We had already set ourselves the stretch goal of achieving a top place in the J D Power survey. We had to do many things including process development work to achieve our goals, much of it to do with cultural changes. I’m very grateful for the experience TRIMENTIS has brought to us.

Customer Services Director , Global Wireless Carrier

I would like to thank you for helping during what has been a very stressful time. Having returned from short term leave as thoughtfully advised by yourselves, I am now back on top of the job and making good progress.

Divisional Head, International Business

We have worked together for about 2.5 years on a variety of assignments ranging from interim management, process management, team development through to work on the overall strategy and operational planning process. I am delighted to recommend them to you.

Customer Services Director, National Wireless Carrier

I was very sceptical when we started out on this work, trying to bring together functions that had been pulling in different directions for so long. I think we were all surprised in the end to see just how powerful it is to get people together on a regular basis to simply talk about the priorities.

Head of Product Management , Global Technology Company

Some of us had been focused on IT as the solution to our knowledge management requirements. However, it became clear that we were missing the people dimension in our thinking and I believe we now have a good chance to bring everyone together on one way forward for a change.

Head Knowledge Management, UK based International Group

The immediate benefit of implementing the platform has been in helping us to rapidly gain visibility and control of a critical business programme enabling us to deliver on time and in budget, and ultimately to create value for our client.

Operations Director, European Telecomms Operator
Click through to Our Client Success Stories

Our Capabilities represent the distillation of decades of management and leadership knowhow

TRIMENTIS combines deep industry knowledge with specialised expertise in strategy, operations, organisational transformation and people development. Brought together as a tried and tested approach, Performance Leadership is the practical realisation of the fundamental concepts underpinning world-class organisations.

Results Our Clients have achieved

The organisation actively engaged with the strategy reducing reportable accidents by 70%, recognised externally by RoSPA’s ultimate award for health and safety.

Health and Safety Strategy Construction Sector

We valued the addressable market at £5.7 billion and recommended a potential to increase turnover threefold in three years.

Market Analysis

The assessment provided insights into the overall effectiveness of project management and leadership, delivering an action plan for improved collaboration and performance improvement focused on health and safety

Management Leadership Assessment

A compelling rail infrastructure strategy forecasting significant revenue growth and margin improvement through market, product and service developments was delivered, gaining wide acceptance

Rail Infrastructure Strategy Development

Strategy development culminated in a key workshop including Board Members, Workers Council Members, senior managers and a range of health and safety experts achieving wide understanding, commitment and motivation

Power Sector Health & Safety Strategy

The senior manager developed radically, building a new level of personal confidence set against a genuine understanding of his strengths and weaknesses.

Personal Development

A layer of senior management was removed and over 200 jobs were taken out of the operation, representing a saving approaching £9 million per annum.

Large Scale Organisational Design

The organisation achieved a Top 3 position in their CAT3 assessment, on target in terms of agreed programme goals and meeting stakeholder expectations.

Highways Agency Procurement CAT3 Capability Assessment Preparation

A compelling strategy and 3 year implementation plan was delivered … needed to integrate and exploit their knowledge for successful innovation and continuous improvement.

Knowledge Management Strategy

Following migration of data from existing systems, internal implementation and support teams were fully trained and the entire system was operational and in use by management teams within two weeks.

Contract Management Web-based Software Solution

A compelling strategy and business plan was delivered forecasting revenues up from ~ £70 million to over £250 million over three years.

BU Strategy and Business Plan

The analysis enabled a targeted programme of overhead cost reduction to proceed, contributing savings of the order of £10 million per annum.

Overhead Analysis

Clear overall themes emerged that in many cases challenged the senior managers’ perceptions of where their relative strengths and issues lay

EFQM Excellence Assessment - QUALIFIER

The maturity of systematic approaches to the management and leadership of the £multi-million project was significantly raised enabling our client to demonstrate best practice approaches to their client.

Major Civil Engineering Project Management

Over the following two years the business went on to achieve a bid success rate up from the original 12% to approaching 80% with Orders at approximately $540M, Revenues at $350M and a positive EBITDA of $24M.

Work Winning Process Development

Process cycle times were drastically reduced, enabling a significant improvement to the customer experience recognised externally by achievement of the sector leading score for process quality in the following year’s annual J D Power survey.

Customer Facing Process Development

The team reorganised based on the development of their core team processes, roles and responsibilities, and the manager embarked on a personal development programme to develop her effectiveness in terms of systems thinking and influencing skills.

Team Organisational Design and Development

The approach provided more clarity, visibility and focus; helping the team identify that programmes were on track, choose the most important things to do and make decisions at the right time.

Enterprise-wide Performance Leadership System

The Head of Product Management developed a range of powerful skills and competencies resulting in higher levels of personal confidence, increased peer respect and ability to act more effectively as a general manager across a range of strategic, operational and performance challenges.

High Performance People Programme Coaching / Product Management Process Development


IT’S NOT CRITICAL … which approach you adopt for your organisational transformation so long as you pursue it with passion.

However, given the choice why not select a proven approach that has been tried-and-tested over time.



Click through to review Our Capabilites

We serve ‘blue chip’ organisations

Telecomms, Technology, Energy and Defence

Major Infrastructure Development

Client Organisations, Designers and Consultants

Find out more about how we turn Priorities into Results

Learn More

Learn more about our expertise in the rigorous use of management and leadership best practice, and how we help get the most out of an organisations processes, people and knowledge through our systematic, results oriented approach called Performance Leadership.

Learn More >

Client Success Stories

Learn how we have worked with clients to achieve significant results through our client success stories. Each client success story illustrates how we have helped define client priorities, what approach the team took and the results the client achieved … turning priorities into results.

Learn More >

Start using Performance Leadership

To start using performance leadership across your organisation today get in touch with us through our Contact page. TRIMENTIS has been working with clients for nearly two decades across a range of sectors and we have supported over £9 billion worth of major infrastructure projects.

Contact us today >