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Our Story

TDCI’s is a business psychology consulting firm that specialises in DEIB Excellence, Organisational Development, Change Management, and Leadership Development. We are a Level 2 BBBEE service provider, accredited with the Services SETA. Our storyline of being an enabler of growth and development stretches back to 1999.

Our Purpose

Our Purpose is focused on Doing Human Better. Through our services we strive to enable individuals, teams and organisations to actualise their potential and emerge in generative ways that foster inclusion, engagement, belonging, innovation, excellence, wellness and citizenship.

Our Methodology

Our psychological/sociological roots afford us a deep understanding of the complexity of human development, interpersonal relations, team/organisational dynamics, and diversity-related transformation. Our work is transformational and focusses on facilitating shifts on individual, collective and systemic levels.


  • On an Intra-personal level we capacitate individuals to be the best they can be, to become mindful of their programming, mental models, and personal baggage, and to liberate minds and heal hearts to unlock their full potential.

  • On an Interpersonal level we connect people, foster community, and create cultures of inclusion, engagement, performance, and citizenship.

  • On a Systemic level we strategically align organisations and create enabling environments where individuals and teams can thrive; that support inclusive, belonging, production and wellness.

Our Facilitators &  Consultants are Experts. Highly qualified and experienced.

TDCI is well known & trusted. We host the National DEIB Awards,  Annual Summit, RIDE & Practitioners Forum.

Our extensive experience in DEIB  - Track record, Client list & Public programmes hosted

Affordable Costing


Our competitive advantage

Our praxis is grounded in sound theories that provide a deep understanding of human development, group relations & diversity.

Our integrated DEIB framework for sustainable change has made us a  thought leader in DEIB Excellence

Our change methodologies enable disruptive & sustainable shifts on individual and organisational levels

Our collaborate approach turn clients into partner.  It drives the principles of ownership, accountability and sustainability.

Our process & tools turn initiatives into continuous, sustainability interventions that foster citizenship and entrench inclusion into the organisational culture

Our Team


Elizabeth Dhlamini-Kumalo is TDCI’s chair and Diversity Equity Inclusion and Belonging Portfolio Executive. She holds a master’s degree in human resources management and has had an illustrious career as Human Resource Manager / Director at Nedcor, Afrox, Woolworths, Sandvik, South African National Parks, Fedics, and SARS. She has driven various large-scale organisational change and transformation initiatives and has been a Maverick in implementing progressive human resource strategies. Elizabeth is the previous Chairperson of SABPP, and current chair of the SABPP HR Governance.

Elizabeth Dhlamini-Kumalo
DEIB Portfolio Executive


Marius is the MD and founding member of TDCI Training and Development. He has more than 30 years’ experience in the fields of individual and organisational excellence, leadership development, change management,  and diversity-related interventions. He is a registered Industrial Psychologist and completed a PHD in Consulting Psychology at UNISA on the evolution of workplace diversity intelligence. He has been a driving force behind the creation of several national & international events. Marius has facilitated more than 500 DEIB sessions for a broad range of public and private sector for clients.

Marius Pretorius
Founder & MD


​Collins is co-owner of TDCI and serves as Director of Business Development. He launched his career in Training and Marketing after completing a BA degree and Business Marketing Programme. He was team leader and Sales Director at Excellante International where he led the marketing function and call centre. In 2007, Collins started his own company, Masimu Marketing Solutions, that focusses primarily on the marketing of training and development programmes. In 2018 Collins joined TDCI to create a bigger national and international footprint within the training and consultancy industry.

Collins Mathebula
Director: Business Development


Georgina completed a PhD at the University of Johannesburg and undertook a Postdoctoral fellowship at the University of Stellenbosch Business School dedicated to the study of women at work. Georgina is a passionate facilitator skilled in communication, management, quality management and auditing. She is an experienced facilitator of DEIB and leading inclusively workshops and has been a panellist in several initiative intended to raise awareness on GBV, women empowerment and leadership. She is currently a business partner to training academies, certification, and accreditation body (SANAS).

Dr. Georgina Pondayi


Cicilia is the regional manager for TDCI Western Cape. She is a lead facilitator who have extensive experience both nationally as well as internationally. She holds a Master’s degree in Psychology and is currently busy with a Doctorate at Stellenbosch Business School. Cicilia specialises on adult learning and development, Emotional Intelligence (EQ), Generational Diversity and the development of Power Skills. She is one of TDCI’s lead diversity facilitators and has presented a wide variety of DEIB and other people skills programmes. She also has experience in the identification, assessment, profiling, and accelerated development of future leaders.

Cicilia Visser
Regional Manager (Western Cape)


Mdu is a seasoned consultant and coach with extensive experience as Strategic Human Capital management and Employment Equity consulting. He has operated within the entire Human Capital value chain and has a passion for people development and business excellence. He is a qualified and astute Human Capital professional with over 22 years’ operational and senior management experience. Mdu specialises in people management, coaching, organisational development, talent management, employee relation, and Employment Equity consulting. Mdu is passionate about a full grasp of continuous improvement as well quality management processes.

Mdu Dlamini

HR and EE Specialist


Margaret is an Employment Equity Specialist. She has extensive experience within the Human Resources environment, people landscape, and transformation/compliance space. Her career spans over 25 years – starting as a Human Resources generalist and then specialising in Employment Equity. Margaret’s educational background includes Human Resources Management, Effective People Management and Leadership practices. Her corporate career includes working for Emperors Palace, Vodacom, Volkswagen, 1Surance and Siyakha Implementation Partners. Since then she served as specialist consultant within the Employment Equity and Transformation space.

Margaret Mallon
HR and EE Specialist


Juan-Jacques is a qualified Actuary that worked at PwC for 3 years where he specialised in quantitative data analysis. As entrepreneur he has combined his actuarial knowledge, programming skills, and knowledge of blockchain technology to create secure systems geared towards improving individual and organisational functioning. His passion for people development enticed him to join TDCI where is focusses on new business development. He functions on the interface of digital technology, Artificial Intelligence, and online systems that create innovative ways to enable people development and inculcate the sustainability of initiatives.

Juan-Jacques Pretorius 
Manager: Future Initiatives

Our Clients

"Leading inclusively is a decision and a choice and it starts with me. I am the architect of the environment in which my colleagues work, and I need to create an environment where everyone feels included and valued."

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