Hmm!
My local EA bailiff wears his EA jacket and hi-viz, so you can see he is EA when he walks up to you. He is also very polite and does chat and ask how things are going, he is into normal fishing conversation. It probably helps that I know who he is and he knows Sky. He has asked to see my licence once, then the next few times I have seen him he didn't bother, quite possibly because it is to hand.
The EA can easily check on a hand reader if you have given your name and address, and have ID to hand, although I do not know how if there is no phone signal in the area. It may be that it is done afterwards, so any non licence holders get a letter through the post.
My money is on someone trying it on.
I bailiff a fishery and even when selling tickets or checking tickets I'm polite, albeit gruff as is my way normally. If I don't have my ticket book to hand I do have the owners number to hand so I can let him know that I have spoken to 'such and such', insert name and text him.