Oscarmax have you any warranty details on the panels and inverter?
The first company to be honest was a joke, they have forwarded the specification of the works, component and breakdown of cost, 5 year warranty, very badly designed and poor quality component., plus they were expensive.
The company at this stage I may go ahead with has glowing local reference in our area, They have been trading as a solar company since 2012 I have checked their account with Companies house, they are offering a 10 year warranty on all parts and labour (backed by the HIES).
The J A solar panels 12 years, LG solar panels 25 years
Unfortunately I have suffered a brain injury and occasionally I get confused and often say the wrong thing.