beyond all reasonable doubt

[bosun]

The following sentences are about the British legal system and can you please explain what the underlined parts mean?

A defendant is innocent until proved guilty ' beyond all reasonable doubt' ( in civil actions , a case is proved on the ' balance of probablities )

[svartnik]

The following sentences are about the British legal system and can you please explain what the underlined parts mean?

A defendant is innocent until proved guilty ' beyond all reasonable doubt' ( in civil actions , a case is proved on the ' balance of probablities )

My understanding is this:

In criminal justice, the prosecution has the burden of proving guilt without any reasonable doubt. Not beyond all doubt, but beyond any reasonable, rational doubt. In percentage terms, the probability of guilt with "beyond any reasonable doubt" is around 85%. The closer this number is to 100, the better it is.

The proof of guilty is different with civil standards. In non-criminal cases, there has to be a preponderance (more than 50%) of evidence that suggest the defendant's guilt. The plaintiff must prove their allegations are more likely so than not so. This is what proving the case on the balance of probabilities means.