No reason for immediate concern. When fraudsters want to make outbound scam calls, mostly they want a UK telephone number that isn't associated with fraudulent calls showing on the recipients phone. These scam calls are operated as a commercial business from third world locations with weak law and order but adequate telecoms (so India in particular), and they "forge" the calling number by nothing more sophisticated than simply typing into the CLID field on their telephony dialling system whatever they want as a "Caller Line ID". That's passed on by telephone systems worldwide without any checks. Possibly they picked a UK number (yours) at random, but in that case they'll soon change it - the whole point of a random number is to escape call blocking systems that stop known scam numbers, international calls and withheld numbers. If it is soon changed then you can probably forget about it. Often they pick a legit UK call centre response number - so yesterday I had a very Indian-accented "Keith" calling me from a distant location, claiming to be from Amazon, with the CLID showed a Glasgow number, sadly he rang off before I could do my Olivier award winning "hapless scam candidate" act to waste his time. Sometimes they use BT, VM or other known business numbers.
See if this recurs and becomes a problem. If it does, get VM to change your phone number.
