That was the "public interest" excuse they invoked to justify devoting so much space to what their readers were obviously expected to enjoy just as a "rich bloke's kinky capers" story.
It was a thin excuse even if it had been true - it might be slightly important if a politician had Nazi fantasies, but a motor racing boss? - but it was exposed as a joke in court. They claimed it was "Nazi" because the main Domme was speaking German (for the very good reason that she was German), but they never bothered to get a translation to find out that there was nothing in her lines that would fit a Nazi scene!