The programme will be formally launched to the public at the end of September or start of October, and all work must be completed by 31 March 2021.
'The government is sticking to the idea that they are going to upgrade 600,000 homes under the programme in less than six months,' he said.
Households will have to access the scheme through providers who are monitored by TrustMark, a quality assurance programme for tradespeople that is backed by the UK government.
'TrustMark said it has 400 companies registered to install insulation,’ Storer said. ‘This means there is a good chance that unregistered builders will try to do the work.
The UK government department for business, energy and industrial strategy, or BEIS is implementing the project.
'We've had Zoom calls with the department and representatives from the big companies. [The department is] not listening to the information they are being given, they don't want detail.'
BEIS has been asked for comment.