Can you swear in your own garden?

I hope so, otherwise I should be in the tower with my head about to be chopped off.

As with all civil disturbances it all depends on the volume and repetition The odd F or C will not cause any disturbance, but if it is continuous, annoying or repeated, then it is a civil disturbance and you can be arrested for it.

You can swear in your back garden but only if your voice waves do not cross your plots boundary - after that it could become a civil disorder.

The crucial point in this is "CROSS" the boundary.