Investor information

Group CEO

Non-Executive Director

Following a degree in Management and Information Systems, Tom has a background in web and software engineering. He now manages a high-yield investment portfolio and is an associate member of the Chartered Institute for Securities & Investment, focussing on UK financial regulation and securities. 

Non-Executive Director

Derek stepped down on 1 January 2026 after seven years as Chair of the Board of Aquila Services Group plc. This is to implement a previously agreed succession strategy. He will remain a Group Director for at least a further twelve months to support the new Chair and to provide a focal point for the expansion of the Group’s international business.  He possesses a wealth of housing sector experience: prior to joining Altair, he was co-founder and Managing Director of HACAS Group plc, a successful quoted social housing consultancy that became a major subsidiary within Tribal Group, where he was Executive Director of Treasury Services. During his career, Derek has advised and project- managed housing and community projects for Governments and cities spanning Asia, Africa and Europe, UK government departments, local authorities, housing associations, commercial property companies, investors and financial institutions. In addition to structuring joint ventures for numerous organisations. He has also worked as both editor and guest editor of Social Housing Magazine and written several books as well as numerous articles on financing the expansion of affordable housing provision. Derek now divides his time between several senior roles across multiple organisations in the housing and finance sectors and is a consultant on a number of major funding projects for affordable housing.

Executive Chair Aquila, Altair and ATFS

Fiona’s experience is in building and running consultancy businesses. As one of the founding Directors she brought her experience of leading a large consultancy business within a listed company and has successfully worked with the board and senior colleagues at Aquila to grow the organisation which now operates across multiple sectors with the aim of ‘empowering socially focused organisations to build better futures’.

As previous Group Chief Executive Fiona knows and understands the business well. As Executive Chair Fiona will guide the Executive and work with the Group Board to ensure the delivery of the new five-year strategy, whist still being able to support colleagues and clients on mergers and acquisitions and corporate governance.

Group Finance Director and Company Secretary

Claire is a Fellow Chartered Accountant and has significant accounting, finance and corporate experience within the consulting sector. She managers the accounting and corporate functions within the Group. Claire is also registered with the FCA and is the Compliance officer for Altair Treasury and Finance Solutions Ltd.

Claire is also Group Company Secretary.

Non-Executive Director

Mr Wollenberg is Chairman and Chief Executive of the Cardiff Property PLC, a quoted property investment and development company. Since his appointment in 1981 he has substantially increased the asset base of the company. Over the past 25 years he has been actively involved in numerous corporate acquisitions, mergers and capital reorganisations of public and private companies, very many of which were in the services sector. Between 1981 and 1996 he was an investment consultant with Brown Shipley Stockbroking Ltd. Mr Wollenberg has considerable experience and an excellent track record of admitting investment vehicles to the market and then negotiating successful Reverse Takeovers by them.

In 2015, as Chairman of General Industries Plc a cost shell, he negotiated the reverse acquisition of Altair which after two acquisitions was renamed Aquila Services Group Plc. He is a non executive Director of Aquila Group and a large shareholder.