51 Stella Road, Montague Gardens, Cape Town, 7441

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Sandy Hill

Group Sales Director

As Group Sales Director, Sandy is responsible for the sales and marketing of the group’s diverse service offering. Sandy has 20 years’ experience in the security and cleaning industry and has built a reputation for providing integrated solutions to all sectors of the market. With a hands-on approach, Sandy offers solutions that effectively and efficiently provide our clients with the peace of mind achieved through sound partnerships.

Riette Coetzee


Riette’s previous experience of a disciplined environment helped her further diploma studies in public relations and business. In Cape Town, she joined The Cleaning Specialists on a Marketing- and Operational level where her knowledge for the industry grew to a great extent. Later, Riette joined Vizual as Operations Manager and was promoted to General Manager in January 2014. As of 2016, Riette has been serving as the Executive Director.

John Christian Miners

Executive Director

John matriculated at D.F. Malan High School and obtained his security training in the SA Air Force, completing 3 ½ years’ service before joining the Private Security Sector.   John became the Western Cape Regional Director for Bidvest Magnum. John joined Vizual as an Area Manager, later became Operations Manager and he is currently the General Manager for our Guarding division. John believes his mutual respect and communication with the workforce has been a good attribute to his success in this industry.

Oagile Mochwariemang

Financial Director

After completing his studies in auditing in Mafikeng, Oagile moved to Cape Town and joined our finance team in June 2007. Through his commendable work ethic, dedication and hard work, he has made a significant contribution to the growth of his department and remains a key person in the company.

Thabisa Sinyondo


From the beginning of her career at Vizual, in 2002, Thabisa had great ambition and burning entrepreneurship. We implemented a skills transfer and uplifting programme starting with departmental orientation to enable Thabisa to gain the necessary experience and knowledge about the business. Thabisa was also given the opportunity, finance and skill to establish her own canteen and fast food business, catering to our staff and surrounding areas. In 2015, with continued knowledge transfer, skills development and financial assistance, Thabisa went on to head a division within the group and continue to uplift our staff and community at large.