The doctor treating 'Robert' says that over 50 days of memory loss is extremely rare and throughout his whole career he's never met someone with no memory at all.
Dr Manaan Kar Ray say the Autobiographical Memory - which incorporates memories of friends, family, and experiences - makes up the 'building blocks' of our existence.
The medical team have taken the man to the town centre of Peterborough where he was found and also to Wisbech, an area with several Eastern European communities, as he has a slight accent.
But doctors say that even if he's identified, the process to bring back his memory will be just beginning.
More top news
It comes as figures show there has been a rise in trespassing in the last three years across the West Midlands.
“He is thoroughly ashamed and was a very lonely man at the time he committed these offences"
The figures have been released by British Transport Police.