I just received the same email. My favourite part:
Originally Posted by The Guvmint
The Identity and Passport Service (IPS) will begin to issue the first identity cards to airport staff working in the secure airside area from this year. However, these people will not be required to carry the cards with them – indeed, legislation specifically excludes any requirement to do so.
(My bold).
So it's either
or
....so, when do you plan to make it law that they
do have to be carried.