I know that this may not be the most appropriate forum for this question but I couldn't think of a better place

I'm looking for an independent service/repair shop or expert that can give me a professional opinion about a faulty dehumidifier.This can't be a manufacturer as I need an independent opinion. Ideally based near Surrey or west London

My appliance is clogged with dirt and is leaking and I think that the air filter (which you can read a paper through) is not fit for purpose. I need an expert's opinion to substantiate my suspicions if I'm to get some of my money back.

I'm trying to keep this post as short as possible but I can go into more details if anyone is interested.