Bordering South Yorkshire is the Hope Valley Climate Action group. To encourage interest in home insulation measures HVCA obtained a thermal imaging camera (TIC) that shows heat loss from properties through the use of infra-red imaging. They offer this service to local residents for free, but invite donations if the service is valued. The survey is offered on an informal ‘good neighbourly help’ basis, not as a professional service. Friends of the Earth in South Yorkshire [add email contact link] now also have a TIC, and training materials are available online. Could your community group borrow the FoE TIC for a week or two and offer something similar?