Now only available as a digital pass.

Flexi Pass: 

• Flexible travel days
• Great-Britain (England, Wales and Scotland)
• Valid on all trains within England, Wales and Scotland
• Valid on all rail operators at any time of the day 
• Valid on high speed trains from London to Manchester and London to Edinburgh
• BritRail can also be used on airport trains like the Heathrow Express, Stansted Express and Gatwick Express  
• Valid on the Caledonian Sleeper from London to Scotland and Night Riviera sleeper trains from London to Southwestern England.

Reservations

• Reservations are not compulsory on British trains but it’s advisable to reserve seats on the main routes to and from London, especially during peak hours
• Reservations can be made for free at any British railway station - often only possibe up to one day before departure
• For sleeper compartments aboard Caledonian Sleeper and Night Riviera Sleeper a supplement is required