Ok, on Scan's site the only number they list is a catch-all 0870, 0870 7554747 - there's no non-premium normal number to call for stuff like faulty goods returns etc, which I don't think is right (hi Chris ;))...

On your site these numbers are listed:
01204 474747
Fax: (0870 7554787) 01204 474787
Customer services & sales: 01204 474700 & 01204 474782

Has anyone ever been able to get through to these? The customer services one definitely doesn't seem to work and I ended up having to phone the 0870 number. The only one that worked for me was one that ended up bringing me to reception (I think it was the fax one?), who will refuse to put you through to anyone regardless.

Scan are usually pretty good, but mentioning this website on their forums gets your post immediately censored, and similar to Overclockers UK they are rather overprotective doing the same for any links whatsoever (even as example to prove goods are available for sale in the UK) to competitors, and also censor any public discussion whatsoever about 0870.

The only different number I can find on a quick web search is another fax number - the 474747 phone number is everywhere
!
Phone: 01204 474747
Fax: 01204 474748

I suppose there's a chance that this implies that they have a block of numbers, so 474740 might be worth a try.