Police have appealed for help in tracking down a vulnerable missing man.

Croydon police took to Twitter this afternoon to share a picture of James Tinsley.

"Please help @MPSCroydon locate vulnerable missing person James Tinsley who is 44 years old," the tweet read.

"James is missing from Croydon University Hospital.

"Please contact 101 quoting 19MIS042609 with any information."