[TVFan]

This one?
tvforum.uk 

Which led to www.dgsys.co.uk  which talks about Knutsford and suggests the bulk of the ad operation for TV-am was done from London and Knutsford was used to "insert" some other stuff as needs be.

But I don't think that's quite what you're referring to, but its related.

Very interesting stuff, thank you for sharing.

No, what I was thinking of was some old Geocities-style webpages where a chap detailed his entire personal experience from joining TVam when they were on the verge of bankruptcy to eventually being locked out.

I think this is one you’re referring to:
web.archive.org