A SASTA train at Brighton station.
What happens if you're at sea and a heavy storm's about to blow in?
Your post prompted a sense of deja vu for me then I remembered I had had similar thoughts when unable to sleep while camping on the pitch at The Amex last year...!!Actually thought about this the other week and in all honesty I'd head for the AMEX. If its a short term thing there'll be enough food there to last a while (insert joke about Amex catering here) but if it turns out to be a proper Walking Dead style apocalypse you've got enough space for living, secure solid walls and a nice bit of pitch to plant crops.
Isle of Wight,zombies can't swim,FACT.
Could grow food in the i360 like a green house! Crucially only one access point but you would be very visable for bandits/ wrongens.