Having just this second whinged about O2's charge for calling 0870 numbers, a comment has just come in on an old say no to 0870 post from March 2005.
Seemed like a great idea at the time but I guess the domain owner has shut the service down. I haven't got time to check it, but the whois register shows the administrative contact for saynoto0870.com is:
Customer Services,
RH DNS
rhdns@bigfoot.com
+447050643964
Chelle, why not drop em a line?
