Once you arrive in the United Kingdom and you are ready to use your Britrail Pass. Make sure you have it validated. This can be done at any travel center or rail station. It is very important to have your rail pass validated.

A railway official will simply stamp your BritRail pass in the appropriate box. Do not validate your pass yourself. Any tampering of your pass may result in it being confiscated or fined by the train operating company. 

You can however travel on an unvalidated pass if an attendent is not present at the time of your desired train departure time. Instructions on validation will be provided. Follow these instructions carefully.

Britrail passes are valid from midnight to midnight. You can come and go as you please within that time period. Your rail pass will be invalid after midnight on the last day of validity. 

It is also very important to enter the date of your rail pass correctly. In North America we enter month/day/year. In Britain it is entered day/month/year.

Your BritRail pass must be presented to the conductor when asked. Always have the appropriate identification on hand so the conductor can match your passport with your pass.