Danny
A few reasons really.
Firstly to find out what sort of prices people are charging for what type of kit.
Secondly I want to see what their paperwork is like. If I get a couple of quotes in I can look at what they give and I will use the best bits from them to produce my own.
And finally to take advantage of the grant system

I have decided to go with NAPIT and am looking to be assessed in March sometime. If all goes well I will change installer details to myself and install on my own place.
This will also give me an opportunity to practice dealing with the DNO and iron out any problems.
By the way where do you get all the stickers and test sheets etc foe G83?