Just in case this is of use or interest to anyone...
A few minutes ago, the doorbell rang, and I politely declined one of those "our experts are in your area, so we'd like to arrange a special free inspection for you" offers. However, the subject of the offer (checking weather damage to rendering) reminded me of this thread...
Interestingly, when I mentioned that I was reluctant to deal with him, having been put off by previous dealings with Texcote, he quickly lost interest.
Adrian