Two of these calls early this morning, my son is away and they put me in a right state - fortunately traced the calls using this site - thanks guys.
Rang for a third time this morning and finally someone answered - he got his ear chewed off (and I know it's not his fault -sorry pal).
Ofcom ruled in March 2006 that companies should have a message saying who is calling, there's no excuse for Goldfish/Morgan Stanley not to do this, they're just behaving like cowboys.
I recommend that you go straight to
http://www.ofcom.org.uk/complain/landline/silent/and register a complaint, it's really easy, we should fight back at these *******s