For Switzerland, your passport must be:
- issued less than 10 years before the date you enter the country (check the ‘date of issue’)
- valid for at least 3 months after the day you plan to leave (check the ‘expiry date’)
You must check your passport meets these requirements before you travel. If your passport was issued before 1 October 2018, extra months may have been added to its expiry date.
For further information, please see the Gov.UK website