Nothing new I suppose but from the Independent today:-
Google could have a record of everything you have said around it for years, and you can listen to it yourself.
The company quietly records many of the conversations that people have around its products.
The feature works as a way of letting people search with their voice, and storing those recordings presumably lets Google improve its language recognition tools as well as the results that it gives to people.
But it also comes with an easy way of listening to and deleting all of the information that it collects. That’s done through a special page that brings together the information that Google has on you.
It’s found by heading to Google’s history page and looking at the long list of recordings. The company has a specific audio page and another for activity on the web, which will show you everywhere Google has a record of you being on the internet.