Don't really mean a no deal Brexit. More like nuclear war/rioting and looting/apocalypse etc.
So, should the world go tits up, how will you protect yourself and your assets? The truth is, should the worst happen, unless you've got weapons to fight off other humans/zombies, you are going to be up shit creek anyway?
(This is a genuine thought of mine - I am half heartedly prepping as it does seem slightly pointless if someone is going to come along and pinch it all using violence.)