Our People

While studying for a teaching degree at the University of Córdoba, David set up his own company which was dedicated to the provision of health and safety services to different communities. 

After University David joined Fundacion Diagrama and spent his first five years as a Social Educator in a secure establishment in Spain. In 2006 he led an after-care programme which helped over 400 children and young people who had been through the justice system. He established links with all the relevant community agencies and organisations which support the young people to reintegrate into society. 

In 2008 he moved from Spain to the UK to establish the Foundation in the UK and was appointed Chief Executive in 2009.David is a member of the European Society of Criminology (ESC) and the European Prison Education Association (EPEA). In 2019 he was awarded his Professional Doctorate in Children & Young People’s Services Leadership from the University of Bedfordshire. 

Derek has over 26 years experience working across multiple sectors, including senior leadership roles in a FTSE 100 global organisation. His background in the custodial sector has given him deep insight into managing complex operations, building strong teams,and delivering real value for both organisations and their clients. Known for his strategic approach and commitment to positive outcomes, Derek excels at fostering effective partnerships and driving improvements that benefit staff, stakeholders, and the people we support. He now oversees Diagrama’s UK operations, ensuring our services run smoothly and make a meaningful difference every day. 

Marina joined Diagrama in 2017, having moved to the UK from Spain where she had studied a degree in Psychology and MSc in Healthcare. Since then, Marina has had a number of roles within Diagrama, first as a Support Worker working with adults with learning disabilities, then as Interventions Manager, introducing Montessori techniques into Diagrama's services, ensuring high standards of person centre care. Marina has also been involved on Diagrama's European projects researching and sharing best practice. In 2020, Marina became a CQC Registered Manager at our Cabrini service in Bromley, and then later in 2021 took on management and responsibility for our Supported Living Service. In Summer 2023, Marina became Head of Professional Standards leading on the provision of technical support to the operational businesses to ensure that a robust system is in place to meet contractual and regulatory requirements across Diagrama UK.

Mary has spent over 10 years in private practice and is currently a partner in a central London firm where her work includes residential and commercial property, company and intellectual property. With an interest in community and social welfare it was a natural step when in 2015 she took on the role of in-house counsel for Diagrama Foundation. Mary looks after all the legal and business affairs for the charity and its subsidiary trading companies, as well as governance and compliance.

Kulbir Kaur was appointed Head of Human Resources in January 2024. With over 15 years’ experience in HR and management, Kulbir has a degree in Business Studies and HR Management and a level 5 CIPD Associate Diploma in People Management. Responsible for over 220 employees across our organisation, Kulbir has a great working knowledge of the charity, and leads the HR team.  

Tina Morris joined Diagrama in 2023, bringing over 20 years of experience in marketing and communications, including senior roles within the care sector. She has worked with FTSE 100 companies, charities, and local authorities, and has also run her own business.

Tina’s true passion lies in using her marketing expertise to make a real difference in the charitable sector. At Diagrama UK, she channels that energy into supporting the organisation’s mission and helping the senior management team drive positive outcomes for the people they support.