DrivingWIMB: Do you always indicate just before you take an exit on a roundabout

[Sir C]

so that other road users know your intention and know - for instance - whether or not they can emerge safely or are you subhuman filth who deserves summary roadside execution?

Asking for a friend.

Yes, of course.

However, taking a chap's indicating as carte blanche to pull out in front of him is simply asking for an embarrassing and potentially expensive collision.