So a follow on from my previous review now my dust has settled
They cancelled for the 3rd or 4th time in June, then after
emailing the London Mayors office, emailing the iChoosr CEO Michiel Drabbe personally and explaining the situation to them... It was eventually installed in September '22 but without a battery so they took that off the final price... then i had to nag them for a few weeks to put in a monitoring dongle so that i can see it's output since i didn't have the battery to do that for me.
I wish i never used them despite how eager i was to install solar - my install works perfectly fine but that is due to the contractors who came being really helpful and efficient.