Looks like you are watching Masterchefs: The Professionals, with Greg Wallace (we like to call him Shrek, affectionately, in the UK) the lovely Michel Roux, and the sometime scary (not to me) Monica.
This version started about 5 years ago, or so, the original being just plain Masterchef, which is the amateur chef version (there are also MC Celebrities & MC Kids) all hosted by Greg & pro chef, John Torode (apart from the professional). So MC in some form is shown for much of the year here.
The focus of the shows very much is on the food, and we don't tend to find out much more than the basics about the chefs until the final rounds, sometimes not until the final episode. There is still plenty of drama though, usually when cooking for the critics or in the pro kitchens.
The show usually airs around 9pm and apart from all the great cooking, does raise a smile whenever particular ingredients or techniques are used. Pea puree, scallops, black pudding, foams, and smears show up on the plates with hilarious regularity on this show.