Our Trustees bring a wide range of specialist skills and experience to Catalyst  – currently their expertise covers Finance, HR, Communications, Law, Security, Domestic Abuse and the NHS.

  • Lady O’Connor DL

    Lady Louise O’Connor’s support of Catalyst stems from a long term interest in Alcohol and Drug Prevention, developed over many years from her work as a teacher in primary and secondary schools, specialising in School Health Education, and prior to retirement in 2007, as former Head of the Drug Prevention and Education Research Unit (DEPRU) at the University of Roehampton.

  • Warren Rockett

    Warren was security and crisis management advisor to businesses and business leaders having spent a number of years as the Global Security Head for a major international industrial company. Previously he was a Surrey Detective Superintendent. During his long police career he led on drug partnership initiatives and was a member of the Surrey Drug Action Team, chairing its Drugs Availability Sub Committee.

  • Elizabeth Grant

    Elizabeth is a retired Senior Human Resources professional with many years experience of working in HR within local authorities and the civil service. She is particularly skilled in the areas of Pay & Reward, Equalities, Policy Development, Performance Monitoring and HR systems.

  • Kath Mills
    Deputy Chair

    Currently heading up the Communications function for London Southbank University,  she has experience in commercial agencies as well as working with and for a wide variety of charities and not-for-profit organisations. Kath has led successful marketing teams for large national and international charities for the last 10 years and has been supporting Catalyst in this area since she became a trustee in 2010. She became Deputy Chair of Trustees in June 2020.

  • Roger Drennan
    Chair of Finance Group

    Roger graduated LL.B (hons) and worked as a solicitor in his native New Zealand focussing on commercial and company law before settling in the UK in 1984.  After a stint with a London firm of accountants he set up his own financial management consultancy  and went on to become Financial Director of a group of UK companies with interests in the USA and abroad. He is experienced in a range of governance and compliance issues and is Chair for the the Catalyst Finance, Remuneration and Investments committee.

  • Kim Tinneny

    I first became aware of Catalyst in 2008 as a client of several of their services.  After being able to move my own life forward, I returned as a volunteer peer mentor for a year, to try and help others in a similar situation. then moved into paid work within the supported housing sector, and now manage a homeless hostel in Guildford. I was previously on the board for a large national Housing Association but felt it was too corporate for me, so decided to focus my energies on something a bit closer to my heart. I feel extremely privileged to be able to sit on the board of the organisation which played such a big part in my own recovery.

  • Jill Clucas

    Jill is a solicitor and has worked in a law firm in the City for over 20 years, specialising in pension law. She has 14 years of previous trustee experience and has a particular interest in trust law and governance issues. Jill cares deeply about breaking the stigma of mental illness and is a mental health advocate at her workplace, speaking openly about her own depression to help break the silence which can surround mental health.

  • Chisha McDonald

    Chisha has held senior management roles in the NHS both within pharmacy and outside pharmacy working in commissioning and leading on high level change programs around demand management and service redesign. Chisha has worked closely with the South London Mental Health Trust which really sparked her interest in Mental Health and was involved in the work they did around improving patient experience.


  • Ewan Henniker-Smith

    Ewan has worked in senior leadership roles across a variety of industries, working on people and culture, and leading change initiatives. He brings a depth of Human Resources experience, with particular specialist skills in strategic planning, resourcing and talent management.

  • Sarbani Bose

    Sarbani is the Founder Director of the data consultancy firm Ei Square with 20 years’ in digital transformation, especially around data and analytics. She recently graduated from the University of Oxford, Said Business School Artificial Intelligence Programme. Her  experience around data and data strategy assisted organisations within telecommunications, construction, and investment banking. She is also the diversity and Inclusion ambassador for the Institute of Directors in Hampshire and Isle of Wight.


  • Rebekka Roberts

    Rebekka is a trained coach and mentor, currently working in public engagement for a Surrey-based NHS organisation with considerable experience in the health and social care sector, including an organisation designing training and conferences for the health and social care sector. She brings a wealth of workplace wellbeing, inclusion, and compassionate everyday leadership experience, and an in-depth understanding of how the healthcare system is delivered, as well as personal experience of mental health, to the Trustee Board.

A tribute to Sue Bowen, our trustee for many years…

                                                                                     Warren receiving the Sue Bowen award in 2021                                                                    



Catalyst Board of Trustees supports the Charity Governance Code

Catalyst Board of Trustees adopted the new Charity Governance Code in 2019.  As part of the adoption process the trustees have been assessing the Trustee Board and the charity against all the 75 good practice components that make up the full Code.

Trustee Warren Rockett said “Catalyst has high standards where governance is concerned. But we are not complacent and we welcome this new Code against which we have already started to benchmark ourselves. In all the critical areas the charity and its Board already substantially meets the requirements of the Code.”

The Code is not a legal or regulatory requirement but it sets down the 7 principals and the recommended practices for good governance. Catalyst will publish in its annual report an update on how we have used the Code to ensure we deliver good governance.

The 7 principles in the Code are:

  1. Organisational – ensuring the charity’s aims are being delivered effectively and sustainably
  2. Leadership – is strategic, effective and in line with the charity’s aims and values
  3. Integrity – adopting values and creating a culture that inspires public’s confidence and trust in the charity
  4. Decision-making, risk and control systems and processes are in place and are monitored
  5. Board effectiveness is demonstrated by using the appropriate balance of skills, experience, backgrounds and knowledge to make informed decisions
  6. Diversity in its widest sense – the Board’s approach supports its effectiveness, leadership and decision-making
  7. Openness and accountability – the Board leads the organisation in being transparent and accountable

The full Code can be downloaded at: