Case study of someone using a 'chimney balloon or 'chimney sheep' to cut energy bills

Searching for a case study for a first person article for The Sun - someone who has saved money on their energy bills by using a 'chimney balloon'.. or 'chimney sheep' or something similar to block an unused chimney to save money on their energy bills.

I'd need a quick chat.

I'd also need you to provide one or two pics of yourself (and your 'chimney balloon' in place in your home, if possible)

Can give businesses a mention

Thanks

Esther