Quite amazing that the offer from Green Energy Together was accepted by the council considering this looks to be the same people (David Elbourne) that were responsible for Solarplicity. They also had an astonishingly poor track record (https://en.wikipedia.org/wiki/Solarplicity). In fact Ofgem took action against the company in 2019: https://www.bbc.co.uk/news/business-47329324 and they were in administration by the end of year (https://www.gov.uk/government/news/solarplicity-companies-information-for-customers). Looking at the google reviews for Green Energy Together, this clearly isn't just Southwark. Nor does it look like Mr Elbourne has improved on his track record.