Just noticed on my bill the above. Apparently the call was made about 3.00 in the morning, lasted less than a minute and cost £4.60

Have queried this with BT and they said they can't do anything until the actual bill is on the system (not due until the 7th of March).

How on earth did this happen ?

Was it an 070 number? That's the only possible way I can figure a call getting that expensive..

I'll check again when I get home (at work at the mo'). But I'm 99% sure it was a UK mobile number; I even remember giving it a ring (and it rang).