Robin, aged 79, was last seen in the North Baddesley area at 3pm on Sunday, 23 July.
He is described as: white, 5ft 8ins, with dark brown/greying hair. He was last seen wearing a blue polo shirt, black trousers and black trainers.
More from Hampshire Police
View all Hampshire Police coverage
- Missing Man Alert in Winchester: Police Seek Help
- Afghan Migrant Jailed for Sick Sex Attacks on Three Women Walking to Work
- Man Jailed for Over Three Years for Coercive Control and Strangulation in Hampshire
- Miracle Escape as Light Aircraft Crashes onto Lee-on-the-Solent Beach
- Portsmouth Mother and Daughter Killed in Horror A3 Crash
- Man Found Dead in Southampton Park as Emergency Crews Swarm Scene — Emergency Services Respond
More from Hampshire Police
View all Hampshire Police coverage
- Missing Man Alert in Winchester: Police Seek Help
- Afghan Migrant Jailed for Sick Sex Attacks on Three Women Walking to Work
- Man Jailed for Over Three Years for Coercive Control and Strangulation in Hampshire
- Miracle Escape as Light Aircraft Crashes onto Lee-on-the-Solent Beach
- Portsmouth Mother and Daughter Killed in Horror A3 Crash
- Man Found Dead in Southampton Park as Emergency Crews Swarm Scene — Emergency Services Respond
More from Hampshire Police
View all Hampshire Police coverage
- Missing Man Alert in Winchester: Police Seek Help
- Afghan Migrant Jailed for Sick Sex Attacks on Three Women Walking to Work
- Man Jailed for Over Three Years for Coercive Control and Strangulation in Hampshire
- Miracle Escape as Light Aircraft Crashes onto Lee-on-the-Solent Beach
- Portsmouth Mother and Daughter Killed in Horror A3 Crash
- Man Found Dead in Southampton Park as Emergency Crews Swarm Scene — Emergency Services Respond