We've used this company for a number of years, most of the time we've had positive experiences. The communication is hit and miss - they don't send the reports through with a faulty unit, you have to request these separately and wait days for admin to get the technician to supply this. Why it is not created at time of test I have no idea! The online method of checking where your unit is within their system is basic and offers no detail beyond 'in progress'. It could be in progress for days until it is actually on the test station. No feedback is given to say when they are busy and their predicted 3 day return period turns into 5 or 6. We've only had one unit come back as 'OK' which was then retested to have a fault, so successwise they are good.