UK fruit peddler to be tried for not using metric scale

[Storebought]

I like it when the British casually use their own system, like in an episode of Are You Being Served, Mr Rumbold says, "I'm not going to lie to your wife and say that you were 90 miles away (from London) in Birmingham"

But they cross the line when they use the old money, as in, "These baby shoes are fourteen shillings five pence three farthings". Seriously, how much is that in real money?