The search for extrasolar planets and brown dwarfs (BDs) making use of radial velocity (RV) techniques currently focuses on solar or later type stars. Nevertheless, we have developed a new RV measurements method that allows to detect very low mass companions around early type stars. Thanks to this powerful method, we are performing a survey dedicated to the search for extrasolar planets and brown dwarfs around a volume-limited sample of A-F type stars. This search will allow to extend the planet and BD formation processes study around stars earlier than F7, which is fundamental in the global understanding of these mechanisms. We demonstrate here our ability to detect planets and BDs around such A-F type stars, as well as our most recent discoveries on this topic.