At 8.30am on Saturday 21 November 2015 a man believed to be in his 60s became ill as he entered Costa Coffee in Poynton.
The man, who had been cycling, was taken to Stepping Hill Hospital where he sadly died.
The man had no ID on him and Cheshire Police are trying to identify him and locate his next of kin.
He is described as white, 6ft tall, of slim build with short greying brown hair which is receding, and brown eyes.
He was wearing a red cycling top with black markings, black cycling shorts and silver, yellow and blue cycling shoes.
Sergeant Andy Baker said: “The man had no ID on him, no bank cards, no phone, nothing to help us identify him so we can tell his family the sad news.
“We have been making extensive enquiries but we still have no idea who this man could be. I would urge anyone who recognises his description or the bike pictured, to contact us.”
Anyone with information should contact Cheshire Police on 101 quoting incident number 288 of 21 November 2015.