Baxter's wife (who's around the age of 50) cajoles around their house in her lingerie on more than one occasion. There is no nudity or even cleavage, but she is immodest in front of all of their servants without a thought.
Baxter's wife makes out and dances with a man early on in the film. No sex but she is a married woman. She cheats on her husband more than once during the film. Later on, she sleeps with a British politician and we see them under the covers and a lot of cleavage.
Baxter has sex with a younger woman outdoors. She undoes her shirt and it is implied that a breast is visible but we never see it. They start to tumble around together down a hill. The scene is cut short and sex is implied.
When Baxter and a younger woman who isn't his wife are tied to a tree by the bad guys together, Baxter tells the woman to reach into his pocket and get his lighter. She does, and accidentally grabs his penis instead. It isn't outright, but it is obvious what took place.
No nudity, just a lot of implied stuff.