Yes I would imagine they are. I would also suspect, that they are pretty cheapish to produce?
Although having said that, I hear from a military source, that units within the British army, will begin re badging on the 6th May of those present for the Coronation, and the next day for those not. That is going to be a massive undertaking, I would imagine. I would expect that we will begin to start seeing police badges, with the King's crown within the near future. Whether there will be a mass rebadging mind, I suspect will depend of the force. But as we no longer have a Queen as head of state, I wonder whether there will be any legal requirement, to update such things, before we see some sort of stated case, with some solicitor trying his luck, about an officer not being in the correct uniform or some other such piffle.