Received a call from this number this morning, claiming to be Citizens Advice, which was a very obvious lie - I know a lot of national codes through having been married to someone working for BT and recognised 0151 as being Liverpool area; living in Oxfordshire, there was no reason on earth for Citizens Advice to be calling me about "unsecured debts needing to be repaid", which was what they were claiming! First, I have no unsecured debts; second, I know that Citizens Advice would not be calling me at all without me having contacted them for advice! I immediately blocked the number once I had the information I needed from them, but I suspect a lot of older, more vulnerable people would be caught out with this one, which worries me considerably.