Initial enquiries identified him leaving his home address in the direction of Ladbroke Grove at around 8.30pm. He was seen boarding the 23 bus southbound in Ladbroke Grove at 8.44pm.
CCTV footage shows he was wearing all black and had a black satchel bag with a white Adidas logo.
Police said further enquires have established that he then took a taxi from London’s W2 area to a residential street in Loughton, Essex.
Now a new sighting captures him on CCTV walking alone on Smarts Lane, Loughton, towards Epping Forest at 12:39am on Tuesday March 23.
The Met said detectives were working around the clock to trace where he went next.
Detective Chief Inspector Nicki Beecher, from the Met’s Area West Public Protection Unit, said: ‘It has now been nine days since Richard was last seen in person and we remain as committed as ever to locating him and bringing him home to his family.
‘Our officers are working extremely hard to piece together the facts in order to build a picture of Richard’s movements on the evening of Monday March 22.
‘Latest information suggests he was last seen in Loughton in Essex and we are now focusing our attention here, with specialist search officers from across the Met brought in to assist.’
She continued: ‘Our enquiries also continue in the Ladbroke Grove, W10 area where local officers have been carrying out search patrols and also community patrols to gather information from local residents.
‘I would once again like to renew our appeal to the public for any information which may assist with our enquiries.
‘If you may have seen Richard – particularly in the Loughton area – or have any information at all, please contact police.’
Anyone with information is asked to call 101 quoting 21MIS008134.
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