Thing about this service is they cannot give out your number, and if someone requests to speak to you, either by text or call, the service calls or texts you for permission to connect you, and if you refuse, they cannot connect, but it still costs the other side a pound a pop, so I don;t see any urgency to become ex-directory, whether I am on it or not...
So it's not a case of them doling out your number to anyone under the sun leaving you swamped with advertising and marketing, they have rules to follow, and of they don't, then they're in deep doo doo under the data protection act...