EU referendum, brexit and the aftermath

No. That time was six months ago. Next best time is now. I dont think there'll be significant food shortages but havign a well stocked larder is never a bad idea. Best case, if nothing happens, and you don't eat it, you can donate to a food bank.

Genuine question. Is if now time to start stockpiling canned food?

No. The issue is fresh food.

Now is the time to stockpile seeds.