How do I choose a strong password?

Your password should contain:

• at least 7 characters
• Your password can't be the same as your email address or your previous 10 passwords.
• Your password must be made up of at least 3 of the following categories:
  • Upper case letters
  • Lower case letters
  • Digits e.g. 1,2,3,4
  • Special characters e.g. $,%,&,*,<,?