Very Confused

In BrE punctuation, does the full stop go inside the ending quote mark(s) if it's the actual words uttered by somebody?

Eg: Michelle said, 'Go to your room, Molly.'

But if it's not an actual quote uttered by somebody, does the full stop come after the full stop. Consider the examples below. To me, because these are not direct quotations by somebody, the full stop in each would go outside the ending quote mark, as exampled in all five sentences per British punctuation. Am I correct on all counts below? If not, could you please indicate which sentences should have the full stops inside or outside.

1. His sentence was 'Creativity knows no bounds'.
2. I love the proverb 'Familiarity breeds contempt'.
3. The signs said 'Keep off the grass' and 'Please dispose of your garbage'.
4. The email said 'Please understand that cell phones are not permitted in the auditorium during the play. ... If you have any questions, please call me at any time'.
5. The policy states 'Employees are not permitted to engage in any semblance of intimidation and harassment'.

Thank you.