It is possible that he has written one that is not widely known or published. However, without further information or evidence, it's difficult to confirm.
To find out more, you could try:
* Searching online databases: Try searching for "Peter Winterbottom autobiography" on Google Scholar, WorldCat, or other library catalogs.
* Checking with his publisher or agent: If you know who his publisher or agent is, you could contact them directly and inquire about any potential autobiographical works.
* Contacting him directly: If you have his contact information, you could reach out to him personally and ask about his writing.
Without further research, it is unclear if Peter Winterbottom has written an autobiography.