Helping you to deliver the change that you want.


Introducing Ninety Days

A brief background on our ethos and what drives us


Our approach

The core tenets of our programs and how they help

Long term solutions

The outcomes we deliver

Our priorities for your business and your teams

Latest information

Insights that grow business

Helpful articles into all aspects of business

What we do

Drive Change from Within


Our Approach

01. Your People

We can all agree that people are capable of quite extraordinary things and in almost every organisation they represent the greatest source of sustainable advantage; this is why, at Ninety Days, we encourage active participation at all levels. 

Whatever the challenge, effective change needs to be imagined and delivered by those that best understand the issues; not only does this underpin successful implementation but it also ensures that the workforce is better equipped to face the challenges of the future.

We believe 90 days is the optimal period of time needed to allow measurable improvement, whilst retaining immediacy of focus on execution.

Our 90-day Accelerated Performance CyclesTM achieve rapid alignment and clarity about what you wish to achieve, and how you will do so, before supporting leaders and teams to execute with precision.

Our process ensures the successful execution of change projects within a 90-day timeframe or multiple 90-day cycles, depending on project complexity.

By starting with the end in mind, we can all be clear on what success looks like at the end of a 90-day cycle. We believe that we only succeed if we deliver an agreed and measurable outcome, and we commit to continuing to work with our clients until this has been achieved.

Because we have great faith in what individuals can achieve when purposefully aligned, we have much greater expectations for you than simply recovering your investment, but we believe that is the very least that you can expect from us. 

Understanding our journey

Our Story

Play Video
Long term solutions

The Outcomes We Deliver

Our priority is not only to achieve an ROI, but to help you to create an organisation that can continually produce these results even after our intervention.

Understanding our journey

Our team

With over four decades of experience in leadership, high-performance cultures, change management, strategy, and an in-depth understanding across a variety of sectors, our team possesses a wealth of knowledge.

Understanding our journey

Our team

With over four decades of experience in leadership, high-performance cultures, change management, strategy, and an in-depth understanding across a variety of sectors, our team possesses a wealth of knowledge.

Managing Partner

Arend Welmers

Managing Partner

Philip Curzon


Our Team

With over four decades of experience with organisations across a variety of sectors, and a team of execution focused Client Managers, Ninety Days will help you deliver the change that you want. 

Ever expanding industries

Sectors we serve

We have worked across multiple sectors such as Manufacturing, Publishing, Finance and Accounting, Transport, IT, Pharmaceuticals, Retail, Distribution and Telecommunications. However, we have specialist sectors that are comprised of our sector specific experts.

Who We Work With

Our Clients

We have worked across multiple sectors such as Manufacturing, Publishing, Pharmaceuticals,  Finance and Accounting, Transport, IT, Retail, Distribution, and Telecommunications. However, we also work in other sectors that require our sector-specific experts.

What we have been saying

Our latest insights

Join our mailing list

Stay up to date with the latest insights and news sent directly to your inbox.

What people say


Organisational Transformation

Our approach transcends mere change management, aiming for profound organisational transformation.

By meticulously assessing your organisation’s culture and leadership perceptions, we identify areas of alignment and discrepancies through our unique “heat map.”

This serves as a strategic guide, enabling targeted interventions and inclusive dialogues with senior leadership teams, fostering a culture of continuous improvement and adaptability that endures beyond our intervention.

High Performance Culture

We instil a high-performance culture within your organisation. By engaging employees in strategic thinking, planning, and execution processes, we empower them to understand their individual contributions to organisational success.

This shift in focus from day-to-day operations to strategic alignment cultivates an environment where excellence becomes the norm, driving productivity, innovation, and competitive advantage.

Impactful Leadership

We focus on producing measurable improvements in key leadership behaviours that directly impact organisational performance.

By benchmarking leaders against global standards and providing personalised coaching, we empower them to inspire, challenge, and guide their teams effectively.

Through our unique 90-day Accelerated Performance CycleTM, leaders not only develop new habits but also lead projects that deliver tangible economic benefits to the organisation, ensuring a clear return on investment in leadership development.

Arend Welmers

Managing Partner

Background Info

Arend works with our clients to design and deliver a process that drives the rapid, measurable improvements that you require. With over thirty years of experience in performance coaching, Arend has dedicated his career to helping organisations accelerate their performance and achieve tangible results.

A challenging, inspiring and highly regarded coach, facilitator and speaker, Arend has a reputation for designing and implementing interventions that challenge conventional practices and quickly generate value for client organisations.

Recent assignments have seen him designing and leading major leadership development and business change strategies in Lisbon, Paris, Berlin, New York and London.


Philip Curzon

Managing Partner

Background Info

With over forty years in senior leadership roles in both the public and private sector, Philip uses his experience to ensure that our clients execute the measurable change they have agreed upon.

Philip, along with our team of associates, remain with the client throughout the 90 Day Cycle to ensure that there is no loss of focus and that we adapt to the unexpected.

In his most recent role Philip was CEO of an educational technology company which transitioned from a bricks and mortar publishing house to a global online content provider.

He is also an alumni of Harvard Business School, INSEAD and the Army Staff College. 


Client Manager

Background Info

Ayesha holds an MSc in Management and Strategy from the London School of Economics and Political Science, a degree in International Business, and a Diploma in Management Accounting. As a Client Manager, she collaborates with both public and private sector clients to execute projects within 90 days, delivering measurable impact.  

Ayesha is particularly experienced in managing Transformation Programmes for our clients.  


Client Manager

Background Info

Molly studied at Newcastle University and graduated with First Class degree in Philosophy. Molly supports our clients through all stages of their engagement with Ninety Days to ensure projects are executed as planned and that measurable outcomes are achieved. She has worked with a range of SME, public sector and private sector clients.  

Dr. Raj Patel MBE

Practice Lead

Background Info

Dr Raj Patel was the Interim Medical Director of Primary Care for NHS England and NHS Improvement. He was previously Medical Director of NHS England for Lancashire and Greater Manchester as well as Director of Commissioning for Lancashire. He currently sits on the General Medical Council and the Doctors and Dentists Remuneration Body.

A Fellow of the Royal College of General Practitioners, Raj was a GP in Greater Manchester for thirty years and has held senior clinical leadership positions in the NHS, locally, regionally and nationally since 1997 as well as a GP advisor role at the Department of Health.

Raj has worked extensively with broadcast and print media in the past. He is a graduate of Manchester University Medical School and sat on the General Assembly of the university. Raj was awarded an MBE in The Queen’s Birthday honours list 2019 for services to healthcare.

Prof. Hilary Garrett CBE

Practice Lead

Background Info

Hilary, CBE, PhD (Hon), MSc, BSc, RGN, RHV, PGCE is an experienced public sector senior leader, recently retired from Deputy Chief Nursing Officer for England post at NHS England. Hilary continues to hold a post as a Non-Executive Director for the NHS Cheshire and Merseyside Integrated Care Board.

Hilary is a registered Nurse and Health Visitor with over 40 years’ experience of working in clinical, public health and leadership roles in the NHS. She held several Director posts across both commissioning and provider environments in addition to holding a Deputy Chief Executive post for both.

She led many local and national programmes of work focusing on improving quality, safety and the working lives of people in the health and care systems.

Hilary is also an accredited senior Executive Coach and Mentor and is passionate about supporting people to realise and achieve their potential. 

John Atkinson


Background Info

John Atkinson serves as a consultant at Ninety Days, specialising in driving transformative change within organisations.

With a strategic approach aligned with Ninety Days’ mission, John collaborates with boards and executive teams to create actionable processes for immediate implementation, ensuring measurable outcomes.

With 30 years of experience, John brings a wealth of expertise to Ninety Days. He has designed engagement processes for the UN Food Systems Summit and supported the World Health Organisation during the Covid-19 pandemic. Notably, John oversaw the ‘Total Place’ program for the UK Government, demonstrating his ability to lead large-scale initiatives.

His pragmatic, hands-on approach, honed through work with global leaders in various sectors, adds significant value to Ninety Days’ interventions.

Mike Gill


Background Info

Mike brings over thirty years of extensive NHS experience, including executive roles as Deputy Chief Executive and Director of Finance.

He has a proven track record in healthcare governance, having led transformation initiatives and improved governance arrangements at various levels within NHS organisations.

Mike’s expertise includes strategic financial planning, quality governance, and risk management. He has supported boards in delivering their strategic objectives and ensuring effective operational autonomy.

As a regular contributor to national board development programs, Mike provides invaluable insights and guidance to healthcare executives and non-executive directors.

Liz Leinhardt


Background Info

Liz, RGN, PGCert Ed, BSc Hons MSc, is a highly qualified healthcare professional with extensive executive and operational experience in top-performing Foundation Acute Trusts, Primary Care, and Commissioning. Her exceptional track record includes consistently delivering performance standards and driving transformational change.

She collaborates with clinical and managerial teams to facilitate service transformation and sustainable change within organisations.

With 30 years of nursing experience and two decades in senior management, Liz possesses a wealth of knowledge in developing and delivering high-quality services.