Well, as another datapoint, they are still sending out their crap. I received one today (8th Nov '02).(posted 7833 days ago)The "author" field of the web page claims "Tom Doggett".
The website is registered to "InToTheNet"
intothenet.co.uk is registered to an "Andrew Scott".
This page is interesting.. http://www.intothenet.co.uk/tom.htm
It's important to know that InToTheNet are *not* directly connected with this. They wrote the web page for "Surveys UK", and they host the domain, but I believe (in the absense of other evidence) that this is the extent of their connection. However if someone wants to get nasty, there is probably a way to get InToTheNet to reveal the contact details for the client (bit of social engineering might be in order).
As to the comments about the solicitors address - that means nothing other than that the people doing this are probably clients of that solicitor. You may well find that they are using their solicitor as a "drop-box". A relative of mine who moves around a lot as part of his job does the same thing.
I haven't got time to dig deeper (job hunting at the moment), but maybe someone else might want to take it further?