What a selection of our customers think of the service we have provided them with.


We have used Onsite Testing Services for several years for our gas monitor calibration and face fit testing requirements and they now carry out safety checks on equipment.  We always receive excellent and reliable service from Mark who is extremely accommodating to work in with the needs and requirements of our business.  Friendly, professional and affordable company to use and we would highly recommend.

Drainflow (Aberdeen) Ltd


“I have known Mark for over 17 years, since he launched his new concept and company I have saved valuable staff time and money travelling dropping off and collecting equipment. Also I have received excellent service from a reliable, knowledgeable and highly experienced technician who is not restricted to office hours as the Aberdeen Oil and Gas Industry never has a day off.”

Fire Protection Alliance Ltd


“Onsite testing services has been proved to be reliable and reactive to our needs by being extremely accommodating in attending an ‘out of hours’ time and venue to meet our urgent requirements. We have been very happy with the service provided and the cost of this service and will have no hesitation in using Onsite testing services should the circumstances arise.”

CLS Offshore Limited


“We received an excellent service from Onsite Testing Services who attended our site, within 48 hours of our request, to undertake crucial health and safety testing for our Operatives. We cannot commend them enough, and will most certainly use their services in the foreseeable future.”

Fairway Contracts Ltd


“I’ve received great feedback from all MCL Medic employees Mark has worked with when Face Fit Training and have found his service and flexibility superb”

MCL Medics Ltd

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