Some time back I corresponded with se23.com forum following a search regarding your experience with a company called "Red Bull Marketing" offering exterior wall work to householders. The overriding feeling was that this was a dubious company that basically conned householders and should be avoided. Thank you - your efforts confirmed my suspicions.

I have lived in Lewisham for 10 years and have regularly received many visits from variously named companies offering the same thing, same approach, same kind of paperwork. I suspect that it is the same people operating under different names, also as your research revealed, using the name of Bayer Global Group. Other members of my residents association have had similar experiences and conclusions.

Please be aware:

Today I received another visit - the current name is 'Home Improvement Marketing Ltd.', also stating the names 'Hi Marketing for the Bayer Global Group'.

I have a few concerns to add:

1. 10 years ago, in the original assessor visit, I was told that work done would be guaranteed for a long period, something like 10/15 years. Of course if the company folds the guarantee does not apply. During the assessment he pointed out problems in a way that I think was aimed to create a lot of anxiety and avoided my repetitive question about how much it might cost. After all this the eventual estimate was very high. A couple of years later we had another assessment from a company with a different name and it was remarkably similar. Towards the end I noticed the paperwork seemed very similar, just a different name. In the following years I have had more visits all much the same and not bothered to follow up offers of assessor visits.
2. In all the subsequent visits over the years the various individuals have never been aggressive, but very amicable, some even super friendly, long lost relative vibe! My neighbour who also had a visit from Home Improvement Marketing Ltd. this week is fully aware of the history of these companies over the years, but still got momentarily taken in - she thought he was from the council, he didn't correct her properly on this, and only became unpleasant when she refused to give her phone no.
3. Some householders sense straight away that it is a scam but since they come back regularly, it must be working - I worry that vulnerable people, perhaps elderly or isolated, might get taken in, especially given the emotionally manipulative sales techniques.

I understand that these things can be notified to Lewisham Council's trading standards department, so perhaps we should do this.