Detectives investigating the disappearance of a man who has not been seen for more than a week have released new CCTV footage of his last known movements.Nathan Cole, who is 32 and from the Notting Hill area, was seen on CCTV walking along Banbury Road in Walthamstow at 23:17hrs on Saturday, 21 January.There have been no further sightings of Nathan since and while officers continue to pursue all possible lines of enquiry, they are increasingly concerned that he may have come to harm.