I heard those items on the news and was alarmed by the tone with which they were delivered. My phlegmatic DH said, probably this was about getting extra funding for defence/the armed forces and also he thought it was unlikely there would actually be an invasion but instead more sabotage of cables, the internet and so on.
If they were planning to invade, I don't see where they would mass forces as they did with Ukraine unless they came by way of the sea and our navy is very alert to our sea borders from reports that I see and presumably our neighbouring allies would come to our defense anyway.
I think what worries me is that even low level increased sabotage may interfere with our way of life and those who are used to stacked supermarket shelves will be upset/not know what to do. Similarly if our water or energy supplies were tampered with.
I fear civilised life breaking down and disorder on the streets. All those people saying they will never obey an order to lockdown again will feel the same about other privations being imposed.
As IOM says above, I think we should stockpile some food and keep some cash in the house, although if the thugs come to the door, that won't be much use.