HomeAbout UsManagement Team
Colin Davidson - General Manager
Colin reports to the CEO of Mazrui Holdings LLC. By working closely with the Divisional Managers he establishes medium & long term plans and strategy for the Company. He has full responsibility for day-to-day business and operational matters whilst heading the Management team.

He believes strongly in people, innovation and the ‘Concept to Completion (C2C)’ customer commitment as the foundation for successful business practice.

Colin began his career with Sigma (then Mazrui Engineering Products) in 1994 as a Sales Engineer for Materials Testing equipment. In 1997, he became Technical Manager covering the full civil engineering & laboratory product range, followed by Manager (MEP), Dubai office in Deira. Prior to the current role he was Regional Manager for Sigma Dubai operations.


Prior to joining the Mazrui group, Colin studied Physics at Imperial College, London, graduating in 1993. Colin has lived in the UAE since 1977.

Kevin Morris - Division Manager (Plant, Machinery and Vehicles)
Kevin joined Sigma as Construction Division Manager in January 2006. Previously with Belle Engineering Ltd in the UK, one of the major principles of the division, Kevin has made the shift from supplier to customer side and brings real commercial and product knowledge gained directly with the Principal to the forefront of the market in the UAE.

Going straight into a manufacturing and engineering environment from University, Kevin has worked on the commercial side of each business supplying products & services and working in several different countries over the past 10 years. His previous roles as Product & Service manager and as Commercial Manager have allowed him to gain a thorough understanding of the importance of supplying a high quality product that is backed up with a high quality sales and service package.

With the construction industry in the UAE and surrounding countries more buoyant than ever, Kevin’s aim is to ensure that Sigma’s products and services are first choice in the markets we serve.

Prasidh Mankotia - Division Manager (Instrumentation)
Prasidh brings with him to Sigma, over 17 years of experience in Sales, Marketing and Business Development of Materials Testing Equipment. He leads an accomplished Sales Team that is committed to ensure customer satisfaction.

Prior to Sigma, Prasidh was the Sales Manager for AIMIL, a leading Instrumentation Company in India with a presence of over 70 years in the International Market. He was responsible for leading the Civil Engineering Division during his tenure at AIMIL.

Prasidh has been associated for the last 17 years, with leading manufacturers such as ELE International Ltd UK, Proceq S.A Switzerland and Tinius Olsen UK, promoting Construction Materials Testing, Non Destructive Testing and Industrial Materials Testing Instrumentation.

Prasidh is a Civil Engineering graduate and holds a Masters Degree in Business Administration with specialization in Sales & Marketing.

Mark Edward Williams - Division Manager (Survey)

Mark’s background has mainly been in the construction industry, being responsible for various roles from Customer Service Manager to Sales Manager. Before joining Sigma, he was with Hilti UAE for almost 10years.

His division endeavors to offer customers the products, services, trainings and back up that will further develop the trust Sigma has in the market, for bringing reliable equipments the customers need not worry about.


Mark has lived in UAE for THE last 15 years, but originally hails from Coventry in the UK.


Lloyd C Selvan - Division Manager (Industrial)

Lloyd brings with him over 15 years of experience in Sales & Marketing to Sigma team. He spent 5 years at Danway LLC (Dubai) handling Industrial products and has in total 10 years of rich experience in the UAE.

Prior to joining the Sigma family he was based in the Kazakhstan for two years responsible for establishing a new branch office for ESMA Central Asia (Industrial Division) and managing direct sales in the western region.


Lloyd comes from an Electronic and Telecommunication Engineering background. He joined Sigma in August 2006 as the Product Manager (Industrial Division) and is currently developing the Industrial/Safety market in the UAE and Gulf region.

Feras Ayoub - Division Manager (Inspection)

Feras joined SIGMA as the first member of the Non-Destructive testing team in Dec 2004, with 5 years of experience in Oil & Gas industry in the Middle East and the United Arab Emirates.

In 1999, after graduating from Damascus University as Mechanical Engineer in the power generation, Feras moved straight to Oil & Gas industry in the domain of fabrication, installation and inspection. His early contact with this industry helped him to understand the tendency of the market, to look out for a reliable and safe technology, which was conforming to NDT standards.


Feras has attended many training courses for advanced NDT methods with Lavender International.