Set up in 2005, Prism has over a decade of experience administering the giving of high net-worth individuals, groups of donors and established foundations. 

We offer three unique services with the aim of streamlining and minimizing the administration around charitable giving.

Firstly, we provide Donor Advised Funds (DAFs) for high net worth individuals which act as an alternative to setting up your own grant making foundation. It’s simple; you tell us where you want to donate and we take care of the rest. We focus on a personal, flexible and swift operation ensuring any tax benefits are also utilised.

Secondly, we operate Collective Funds for groups who are starting their fundraising journey in the UK. Instead of the time and cost of setting up an operational charity, you can create an account at Prism.

Thirdly, we also provide Foundation Administration to other registered charities – both operational charities and grant making foundations – that benefit from outsourcing their board support and financial administration to save on time and costs. 

We are not strategists, we are administrators, and this helps our donors feel secure in the knowledge that we are experts in our field. We believe that the effective running of an operation’s infrastructure can significantly increase its impact, regardless of whether you are a high new worth donor, a fundraising group or a trustee.


  • Anna Josse

    CEO and Founder

    Anna co-founded Prism in 2004 as a way to increase charitable funds into the sector . She has expertise in relationship management and building operations. Previously Anna worked in the high-tech industry and set up the Yazam Europe office and was their Director of Investor Relations. For six years Anna set up and ran the British arm of a USA based charity, the New Israel Fund. Anna also acts as a trustee and advisor for a number of charities. She is also the director and shareholder of a financial services company, Regent Capital, which specialises in offering investment products and services to UK-based high net worth investors.

  • Mary Smith

    Senior Relationship Manager

    Mary joined Prism in October 2017 as Senior Relationship Manager. Mary is developing and managing external relations with individuals and client intermediaries through our Donor Advised Funds (DAF) service. Mary is also working on Prism's event programme, and ensuring we build and develop our profile as we continue to grow and expand.

    Mary has over 12 years experience working in the charitable sector developing relationships and managing large multi organisational partnership projects. Mary is delighted to be working towards Prism's aim of Increasing the flow of funds to charities across the world.

  • Harry Mallidis

    Head of Internal Systems and Operations

    Harry joined Prism to maintain and build upon internal systems and processes, ensuring that we have the best technological and organisational solutions in place to support the organisation’s rapid growth. Harry is also focusing on developing relationships with clients and is responsible for the on boarding process for new clients.

    Previously to Prism, Harry worked for Impetus – The Private Equity Foundation where, as an associate manager, he oversaw a programme of operational and organisational optimisation. He holds a Masters in Cultural Economics and Cultural Entrepreneurship from the Erasmus University in Rotterdam and a Bachelor in Economics and Finance from the Athens University of Economics and Business.

  • Paula Pinto

    Relationship Manager

    Paula joined the team at Prism towards the end of 2017 to start as an Account Manager. Paula moved to London to complete her MA in Social Entrepreneurship, which naturally took her into the NGO sector. Paula comes from a legal background, having worked in corporate law as well as the shipping and insurance industry. She has always had a keen interest in the charity sector, and has also volunteered for The Rainmaker Foundation and The Finance Innovation Lab.

  • Camilla Elwood

    Relationship and Communications Manager

    Camilla joined the Prism team in October 2015. Responsible for managing Collective Fund relationships, Camilla also works on Prism's events and communications programme, helping ensure our message reaches far and wide. Before starting at Prism, Camilla worked in a variety of roles, from teaching abroad to fundraising for a large charity.

  • Sarah Gluckstein

    Relationship Manager

    Sarah joined Prism following fourteen years working in the third sector. Acting as a Relationship Manager she supports a number of Trusts and Foundation and individual donors. Sarah brings a wealth of experience of developing and maintaining client relationships, having previously worked closely with Patrons, Donors and Trustees.

  • Zuzana Olejnickova

    Finance and Compliance Officer, Help Refugees

    Zuzana has long nurtured a personal ambition to work in the area of Humanitarian and Development Aid and is delighted to have joined the Prism team so that she can realise that goal. Since graduating at International Relations and Economic Policy, Zuzana has worked in international client-facing administration roles. She first joined Prism as a Database and Financial Administrator where she was committed to increasing the flow of money to good causes. After 9 months in this position she moved to the role of Relationship and Finance Manager, supporting Refugee Collective Funds to deliver their mission of providing aid in the current Humanitarian Refugee Crisis.

  • Jenny Davis

    Finance and Compliance Manager

    Before joining Prism in early 2012, Jenny ran a client facing private business and has experience in a number of areas from accounts, marketing, customer relations, administration, office management and more. Jenny was also the volunteer fundraising coordinator for Radio Lollipop London and Evelina Children’s Hospitals, responsible for raising tens of thousands of pounds yearly, and sat on the management committee for two years. Jenny therefore brings to Prism a wealth of experience in both the private and charitable sectors.

  • Gideon Lyons


    Gideon co-founded Prism with Anna. He is also a director and shareholder of Regent Capital. He is a director of Wire2, the operator of a newslink wire service. This provides all the major national and regional media – newspaper, radio, TV – with stories as well as distributing information from government bodies. In 1994, Gideon co-founded a retail group that had 30 stores across the UK operating Levi’s, Timberland and Cat Footwear franchises, and Bed and Bath Works. In 1982 Gideon built up a multi-national automotive component group. Gideon holds a number of directorships and shareholdings in private companies.

  • Myrsini Manney-Kalogera

    Relationship Manager

    Myrsini joined the team at Prism the Gift Fund in October 2016. She works with collective funds to facilitate their operations and help them fulfill their particular missions. She also provides support with databases to the rest of the team as needed. Before coming to Prism, Myrsini taught primary school and held positions as an Administrator and Research Assistant at two New York universities. She is also currently pursuing a Master's Degree in History at the University of London.

  • Mohamed Hassan

    Finance Executive

    Mohamed joined Prism as a Finance Executive. Previously, he worked for Sands as an Account Assistant and at Tower Hamlets Youth Offending team as a Supporting Officer. He helps with the day to day running of Prism's finance department, completing payments, processing, verifying, and reconciling invoices.

  • Amber Clabburn

    Finance and Administration Assistant

    Amber joined Prism in January 2018 and she is responsible for supporting the administrative and financial aspect of collective funds. She also works closely with the Relationship Managers to ensure a smooth running of data processing. Prior to joining Prism, Amber prominently worked in the Education sector and has experience working with an variety of stakeholders. Amber has always been interested in pursing a career in the charity sector and has previously volunteered with the RNLI and Forever Hounds Trust. She has a degree in Marketing and is currently pursing AAT qualifications in order to support her role.

  • Jack Burgess

    Finance and Administration Assistant, Help Refugees

    Jack joined the team at Prism in early January, 2018. As a Finance and Administration Assistant for Help Refugees, he supports the Finance and Compliance manager in maintaining the financial processes and internal systems.

    Previous to Prism, Jack held the position of Accounts Assistant for SJD Accountancy and has obtained a Bachelor's degree in Accounting and Finance.

  • Yoni Amias

    Yoni is Client Relationship Manager at Singular, a unified mobile marketing platform for the largest tech companies in the market. Formally he was Partner at Allocator, an online platform that connects institutional investors with fund managers. He also acts as a consultant, and was the Development Director, for an international charity that works with civil society groups to promote the Middle East Peace Process. There his main focus was with high net worth individuals, family trusts and foundations. He has held different positions in other charities, and as part of this work, helped to set up three schools in Bangladesh. Yoni has also held positions at the European Union and the UK Foreign and Commonwealth Office.

  • Lord Stone of Blackheath

    Lord Stone was raised to the peerage as Baron Stone of Blackheath in 1997. He joined Marks and Spencer Plc as a trainee in 1966 and retired his position as joint Managing Director of the Company in 1999. He is currently a Director of two retail companies and a number of NGOs and involved in several charities. He has a deep interest in community work based around his fascination with the juxtaposition between art and science and a lifelong interest in the process of creating understanding and progress toward peace in the Middle East.

  • James Libson


    James is the Executive Partner of the law firm, Mishcon de Reya LLP and heads its Private Department. He looks after the interests of families and entrepreneurs especially when they are involved in complex disputes. Recently he acted for Gina Miller in her challenge to the Government over the triggering of Article 50. He is a trustee of World Jewish Relief (the Jewish community's international development charity), which he chaired for five years until October 2016. He has also served as a trustee of the Jewish Leadership Council and a governor and chair of governors of a primary school.
  • Penny Lovell

    Penny was appointed as Head of
    Private Client at Sanlam Private Office in October 2017.
    She has over 20 years of experience working with private clients, family offices, charities, professional intermediaries and financial advisers. Penny began her career began at Friends Provident before joining Coutts. Penny subsequently worked for ten years at Fleming Family and Partners as a Client Director for the Fleming family. Before joining Sanlam, Penny was Head of Private Client at Close Brothers.

  • Charles Mesquita

    Charles is Charities Director at Quilter Cheviot. He has thirty years’ investment experience working for leading financial institutions including Newton Investment Management and Rensburg Sheppards (now Investec). Among other key roles at these firms, he was responsible for founding and launched the Charities Property Fund with Savills in 2000: this was the first Common Investment Fund investing in UK commercial property. Over 1,800 charity have invested in the Fund with assets of over £1 billion.
    Charles also established the first educational programme designed specifically to assist charity trustees to keep abreast of issues of interest to the sector, in partnership with Farrers and haysmacintyre. He is a regular speaker/panelist at industry seminars and has published a number of articles about charities and their investments. Charles sits on the board of the Charity Investors Group, a forum promoting a greater understanding of investment within the sector.

    As well as Prism the gift fund, Charles is a trustee of Bowel & Cancer Research and RL Glasspool, a charity which helps those most in need.

  • Tracey Reddings

    Tracey Reddings is Managing Director and Head of Front Office, UK and Ireland at Julius Baer. She has enjoyed a 30 year career as a banker spanning across the private, public and charitable sectors . Prior to joining Julius Baer she was Head of UK Private Banking at J.P. Morgan Private Bank and SG Hambros Bank Ltd and before that, she was Chief Executive of CAF Bank Ltd and CAF Marketing Services. Over the years, Tracey has developed a strong track record and reputation for delivering innovation and building partnerships to create new business, successful teams and enhance brand value; in 2007 she was awarded the Queen’s Award for Enterprise in the Product Innovation category. Tracey is an MBA-holder and a Chartered Director; she is also a Fellow of both the Institute of Directors and the Chartered Management Institute, and a Freeman with the Guild of International Bankers. She recently stepped down as Chairman of the British Bankers Association Wealth Management and Private Banking panel and is a Trustee for Prism the Gift Fund and Local

  • Michael Ridley

    Michael Ridley spent 37 years in Investment Banking in London and the United States and was Vice Chairman, Investment Banking at J. P. Morgan until November 2016. Prior to this, Michael was a Managing Director at Salomon Brothers and Head of Fixed Income Trading at an Australian bank. He was a member of the Chairman’s Committee at the London Investment Banking Association and a Board Member of the International Capital Market Association. He is involved with a number of charities with a strong interest in child survival, music and education. Michael is a Vice President of Save the Children UK and Deputy Chairman of the Handel House Trust. He is a graduate of Trinity College, Oxford.

  • Joanne Winston

    Joanne joined JPMorgan Private Bank in 2001, after completing an internship in the Investment Bank the previous summer. Since then, Joanne has worked on the UK Banker team covering UK based UHNW clients, the Fixed Income and Equities teams for Derivative Sales and most recently founded the Cross Asset Derivatives Structuring Team in EMEA in 2010.

    In 2011, Joanne took over the global lead and now manages teams in New York, Asia and London covering the counterparty relationships and product development of the Structured Product and OTC businesses - with over $10bn currently invested globally. In addition, Joanne led the first phase of the EMEA Private Bank Product Governance Framework.

    Joanne graduated from the London School of Economics with a BSc Hons in Philosophy. Joanne is also fluent in German and proficient in Hebrew and French. She is married to Joel, a Clinician and Scientist and they have three children - Isaac, Aron and Stella. Joanne is also an active member of her Jewish community, loves cooking and entertaining and adventures with her family.


Prism the Gift Fund's Impact

By combining the UN’s Sustainable Development Goals and the UK’s Charitable Purposes, Prism has formed nine main areas to help us measure our impact across the sector and around the world.

Starting from the beginning of our financial year, 2016/17, we will be categorising the work that we carry out. We want to know the impact that we have and what our clients have around the world. We are aiming to create yearly impact reports that will analyse how much Prism donates, and what cause the funds are being spent on. 

Watch this space for our first impact assessment report!