@Son of Hobbes Migro may be of interest for you to contact!
Migro is an awesome youtube channel and they review many LED lights, a great place to see what's what!
They give Par readings at different heights and PPFD/Watt reading.
They also manufacture there own LED grow lights with a 2.25 – 2.37 µmols/m2/sec/watt which is a really good level!!
They are based in Ireland so if you got them onboard would be really handy for UK testers but they send worldwide as well!
Migro Youtube channel
Migro Website and Own brand LEDs
ARAY 2 | 120W their entry level light
MIGRO ARAY 12 | 720W – 800W They employ a modular system of light bars.
Sean is a very well respected LED grow light reviewer but has also done HPS, CMH, Fluorescent Lights as comparisons too.
Sean get sent light from all over the globe to review and he always does a totally transparent review with no bias.
As already mentioned he is also a manufacturer of LED lights and ones that pack a punch when it comes to PPFD/Watt readings.
Please give it ago to get him onboard in the forums, he is a really nice guy and builds great LEDs.
His youtube channel is an invaluable resource when it comes to deciding a good LED to buy but also you can see which companies are worth contacting in order to get them on board too!
Oh almost for got they also sell a UV tube and has been tested by Dutch Passion
MIGRO UVB delivers 19% Terpene increase in Dutch Passion test
Dutch Passion, one of the worlds oldest seedbank companies, has tested the MIGRO UVB to determine the effect on terpene levels. They ran a controlled test in a side by side grow, one side with UVB, one without. There was a 19% increase in terpene levels under the UVB fixture, some terpenes increasing by almost 50%.
Please note the scale on the right hand side is different and makes the result look lower. Please note the percentage numbers and not the size of the bars.