The Air Ambulance was called to Greenham this morning.
The aircraft landed on Stroud Green shortly before 9am.
Police and paramedics also attended.
After about 45 minutes, a man was taken to hospital by road.
The Air Ambulance helicopter left Stroud Green just after 9.30am
A spokesperson for Thames Valley Police said, “Thames Valley Police officers attended Fontwell Road, Newbury at around 8.40am today (2/6) following a report of a fear for welfare incident.
“A man aged in his seventies was taken to hospital, and currently remains there in a serious but stable condition.”