Beware of www.ukenergyassessment.co.uk. This is not a legitimate company. This company cold called my parents in law, offering free grants for windows, boilers etc. They visited, offering to replace 5 windows (glass only) with energy saving glass, that allegedly saved 70% of your heating bill (Windows account for 20-30% of heating loss, so this would be difficult.) My parents in law paid £852 deposit by cheque, which has now cleared. The original cost quoted was £6,000, which when they declined, then immediately dropped to £3,000. The company say they are 30 years old, and the UK's leading energy specialist, but - They have no presence anywhere online except their website, no reviews, no mentions anywhere. - No social media presence at all - No company information on their website, (Illegal)and no results on companies house - Website was registered in June, anonymously - - Their registered office address is almost certainly a virtual address in Staines - - When you call the phone number, Google tells me it's the number for Maida Vale Local Clean, a cleaning service in London. It's also a different area code than the virtual address. - The links to grants they show aren't for consumers, but businesses, and seem designed to mislead - The grants they claim to get, require a paid audit and a certificate - they have done neither of these, and so are not a legitimate part of this scheme. In short the company doesn't seem to exist. Unsurprisingly, they have put off returning, and I suspect never will. I will correct this review if they do. Adding this to give others opportunity for easier due diligence.