Businesses, community groups, arts organisations and residents in a thriving town on the Croydon-Surrey border are in uproar because the automatic systems employed to police social media have silenced them on one of the world’s biggest digital platforms – all because Coulsdon has the letters L, S and D in its name.

Residents’ associations and businesses with “Coulsdon” in their titles have found themselves “cancelled”, with posts being removed from Facebook and warnings issued as to their future conduct under a set of rules so vague that any post, however innocent, might fall foul of them.