BBC News wrote:So-called Brexit survival kits costing almost £300 are being sold ahead of the UK leaving the EU.The packs include enough freeze-dried food to last 30 days, a water filter and fire starting gel.
Lynda Mayall, 61, said she bought a box to supplement her stocks of tinned food and toilet roll as she feared there may be "chaos" in the months after Brexit.
A government spokesperson said there was "no need" to stockpile any of the items in the box.
A number of Brexit survival-themed products have appeared for sale and several online discussion groups have been set up.
More than 3,500 people have joined the Facebook group 48% Preppers which says it discusses "the practical preparations people are making for life after Brexit".
Meanwhile a "Prepping for Brexit" page on Mumsnet has more than 250 posts with members saying they plan to stock up on everything from medication, toiletries and nappies to hair dye and tobacco.
Prof Tim Benton, an expert in food systems from the University of Leeds, said he did not foresee the UK running out of food but believed there could be "situations where we cannot reliably get what we expect to see on the shelves on a daily basis".
He said the most likely disruption would be caused by panic buying and urged people not to "overreact".
However, he said it was "almost inevitable" that food supply would be affected in a "painful Brexit"
A government spokesperson said: "People don't need to stockpile food, water filters or fire starters.
"The UK has a strong level of food security built upon a diverse range of sources including strong domestic production and imports from third countries. This will continue to be the case whether we leave the EU with or without a deal."