In the EU, and for however long it may last including the UK, the new laws apply. I have asked AirB&B about their regular requests to give them access to my address book. They did not reply as yet, now four weeks ago, so I contacted the new government service in the UK. They did reply and stated that it is not illegal to ask for access to my address book, however it is illegal for me to allow this access, if I do not have a legal basis for the sharing of personal data, i.e. having asked and received and recorded permission for sharing from everyone in my address book.
I would like to suggest AirB&B stops asking hosts to avoid them inadvertently doing something illegal. I have not had a response from AirB&B.
Any suggestion about how to get a public response and commitment to avoiding the likelihood of hosts breaking EU law, are welcome.