I know that it’s correct to consider ‘police’ as a ‘collective’ noun and say
Police have/ are/etc.… (not is/has/…)
On the other side, I myself normally and carelessly use both
‘Microsoft has changed…’ and ‘Microsoft have changed’, but I’m not too literate.
But I still suppose there should be a formal rule for a name of a company – how to consider it, as a plural or singular noun?
British Gas [has / have] today announced…
Or does it depend on the context?