From 15 March 2016, Canada is introducing a new entry requirement, known as an Electronic Travel Authorisation (eTA), for visa-exempt foreign nationals travelling to Canada by air. Exceptions include U.S. citizens and travellers with a valid visa.
All eligible travellers flying to Canada from 15 March 2016 will need to apply online for an eTA before travel. This requirement includes all British citizens. The cost of the eTA is C$7 per passenger, and the validity of the eTA is five years, or until the passengers passport expires or is renewed.
You can find out more and apply online at Canada.ca/eTa