[yarper]

Actually the right to a jury isn't absolute [0], you can also be compelled to divulge encryption keys using a two year jail sentence [1] (no right to silence there).

Self defence is still as you say, completely legal.

[0]: https://en.wikipedia.org/wiki/Juries_in_England_and_Wales#Tr...

[1]: https://en.wikipedia.org/wiki/Key_disclosure_law#United_King...