Well, the major supermarket chains are stating that "shortages" of some perishable products could start within 24-36 hours if Just in time schedules (JIT) suddenly come to an end.
There was a program on Channel 4 last night that I only caught part of that was reporting from Immingham I think. Trucks move through the roll on roll off system there at the rate of one every forty seconds to and from the Continent.
The port management advised that if delays start of more than 15 minutes to those trucks, then the whole port would come to a standstill within an hour.
The management also advised that their own staff are now asking about the future of their jobs, but as a management, they cannot tell them anything as they have been told little themselves.
Not a great prospect, so, start stockpiling.