Is it possible to stay put when you're near London?

[Lightspeed]

Rachel,

You can only do what is do-able for you.

Being realistic is not being defeatist.

I think in your position I'd try initially to build up a months worth of extra supplies. things with a very long shelf life, and of course a good amount of drinking water.

As time goes on you'll possibly find other options that are not currently apparent.

Good luck