As I understand it, it is - at least in the case of very large companies. I'm not sure that the police need any 'insurance' at all, per se - since I would have thought that, like hospital doctors (and now, I think, also GPs), they benefit from 'Crown Indemnity' (i.e. the State underwrites any claims against them).
I haven't read that 2019 legislation in any detail, but I suspect that it primarily applies to individuals, or smallish groups of people/companies - and not to massive companies with vast assets. Indeed, if the massive companies so wished, they could presumably set up 'insurance company' of their own, separate from their primary business.
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