Police are appealing for help tracing a missing man with dementia.
Thames Valley Police are looking for Kewal Singh, 72, of Slough, and believe he could be in Harrow.
Mr Singh was last seen at his home in Slough at 12pm on Monday.
He is Asian, 5ft 8ins tall and of medium build with short hair.
When he was last seen he was wearing a navy blue rain coat, grey/navy trousers, a black woollen hat and gloves and black shoes.
Inspector Vicky Linton-Smith said "Mr Singh has now been missing for more than 48 hours and we are growing increasingly concerned for his welfare. He suffers from dementia and has poor short term memory.
"Previously he has gone missing before and been found in Langley, Harrow, and Hayes but he has never been missing for this length of time.
"I would urge Mr Singh's friends to contact us if they know where he might be and ask anyone who has seen Mr Singh to contact police via the non-emergency number 101 quoting URN 437 31/12."
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