Honesty is the best policy...
Guy came to the door, said there were government subsidies for free cavity wall insulation and new boiler. Seemed to good to be true. I was half right. Got the cavity wall insulation, but the boiler was a waste of time, the surveyor came to look, spent a long time taking pictures of every single radiator in the house, behind heavy pieces of furniture I had to move, but at least I was getting a new boiler, right? Nope. That was just a lie. Like others have said on here, they rang up a week later and told me the price had gone up by nearly £700. What a waste of everyone's time. I assume the door-to-door guy gets incentives for booking in surveyors? So he just sugar coats the truth to get a survey done. Not a good business plan. Unlikely I would ever consider using or recommending the company in the future.