It is predicted the technology could dominate the lighting market by 2015.
"We like to test things in-situ in order to understand their real performance rather than rely on manufacturers' claims," explained James Russell, EST's technical development manager.
But, he added: "We are at one of those rare times when there is a revolution, I think it is fair to say, within the lighting sector.
"LEDs promise to be the way forward for the whole sector, to be honest. There are so many benefits: they can be smaller, brighter; it is one of those rare technologies where the trial has shown it performs better than the lighting systems it is replacing but, at the same time, using less energy."