Abusive passengers could be blacklisted
 

From the BBC...
Abusive passengers could be blacklisted from all airlines under new proposal

This isn't possible at the moment as sharing the data between airlines would violate GDPR laws.

https://www.bbc.co.uk/news/articles/c707pknywjno

There is a form of blacklisting already in existence that could be extended to the airlines.

For example, if you go on a coach holiday or a cruise and you misbehave continually, you can not only get sent home but banned from every coach company or cruise line

Many years ago I did some work for a major UK coach holiday company and encountered a professional complainer. She was an absolute nightmare and caused all sorts of problems for the hotel and the other pax on the coach. I reported back to the company and they permitted me to offload her and she was added to the UK blacklist which meant that she could never travel by coach anywhere within the UK and Northern Ireland for life regardless of the company that she tried to book with.

So it can be done and there are databases of people that cannot take coach holidays or cruises..... doing the same with airlines shouldn't be difficult to accomplish.

Presumably the above all took place pre-GDPR ?

Tbh unsure when GDPR came into effect but this woman went onto the blacklist for life in 2014.

When I called the company from the hotel to report the issues, they did say that the blacklist was something that the companies had set up due to so many professional complainers. The woman in question had already been reported by at least two other coach holiday companies which was only known after I reported having problems with her. It may have been a sort of "gentlemans agreement" type of set up in that people who misbehave are listed and the list is updated and sent to every coach holiday operator. I have also heard of similar blacklists running tween the cruise lines too and there have been many passengers who have been banned for life off, for example, Carnival Group, which is Princess, P&O, Costa Crociere, HAL, Carnival, AIDA, Seabourn and Cunard. misbehave on one of those lines and you get banned from all of them and that has been the case for at least 15 years or more.

If I recall correctly, every establishment on land, sea or air, has the right to refuse admission. Black listing has always been around, I recall this happening in London in the early 1980s - in an unrelated line of work. I have always presumed that the airlines had something like this. However, it is only in recent years as on board behaviour has changed so much, that individual carriers are banning people. That is, in so far as it becomes public.

I am not sure that passing on a name to another organisation breaks that? Passing on their address, contact details etc. certainly would. Anyone who thinks that they have been blacklisted in this way would have an enjoyable time going to court about it ...

Though basing a blacklist on a name alone is fraught with danger, as some surprised visitors to the USA have found out in recent years ...

I share a name (both First and Second names) with a right-wing journalist and novelist, who writes for the Daily Mail. I used to get his emails and vice versa, I'm .org and he's .com. Going by name alone is Not A Good Idea.

Many years ago I was taken aside everytime I entered New Zealand. This went on for a few years. One trip when I wasn't stopped I enquired why. It turned out I shared my name with a wanted character who had been shot by the police solving my problem.