I don't think there is any reference to this elsewhere so I am posting here.   Three times in the last couple of weeks (plus two missed calls) we have been called by a number 0141 445 6630.   After the first missed call, I googled it without success other than that the code was Glasgow.   When I caught a call, the person said they were doing medical research for Stanford University, suspecting a catch(!), I told them we were on TPS and not to call again; a few days later, same thing, again said we're on TPS, do not call again, I was again reassured the records would be amended.  My husband has just taken ANOTHER call, again told them were were on TPS.  I tried calling the number, the line goes dead.  Has anyone else had this?   I have also forgotten to whom I should report this.  There are obviously quite serious implications here as they are seeking medical information about sleep & vulnerable people could end up giving confidential info to the unscrupulous.  Thought you might all appreciate the warning!

Hmm..  Nothing on google, but searching some nearby numbers shows that it's not part of a DDI range, as 6633 is an electricians and 6638 a take-away, both in G51, and DDIs normally get allocated in blocks of 10..

It appears they use various 0141 numbers.

See: http://whocallsme.com/Phone-Number.aspx/01414251776