I used to have access to the CLMS as a teacher but how can I access Cambridge One?

Just go to Cambridge One and log in with your existing CLMS username and password. The first time you visit, you will be asked for a few extra details including your user role. If your school already has an account, please ask your administrator for the school key so you can join it.
If you need to activate any materials on Cambridge One, you can do so using the code printed in your book or given to you by your school.