If you are that worried then find some led drywall. It's used in the medical field around x-ray equipment. The standard is 2 pound's of led to every sheet of drywall and led tape to cover the joints. Led is the ONLY way to grow and not been seen by inferred equipment. You do need to hide the exhaust too.

This is very expensive like in the US it's 135.00 a sheet but 2000 USD now is better then 10-25 years for growing & another 25,000 for the lawyer bill. Just to put the cost in perspective with the charges you could face. Where you live I don't think they are going after the home grower anymore I thought the law was easing up in the UK?


Good luck to you.