A luxury £12million London mansion is among properties hit today as part of a package of sanctions targeting alleged masterminds of illegal scam centres. Joint UK-US sanctions are being slapped on a network of centres in South East Asia the Foreign Office said had been used to trick victims out of substantial sums of cash. As part of the crackdown assets including a multi-million pound mansion on Avenue Road in North London - owned by a firm using forced labour to scam people - has been frozen.