Re: The "Serious Fraud Office"?
"Serious" in those contexts will have a specific legal meaning
Or not. Like the "serious sexual offence" of being caught short and having to take a leak behind a tree, or the "serious sexual offence" of slapping your stroppy teenage daughter across the face when other methods of bringing the brat into line have failed (by her own admission, she deserved it). Yes, both of these "serious" offences have landed people (note - all men, Treasonous May and Harriot Harpy both considered all men as sex criminals that just hadn't been convicted of something YET) on the sex offenders register.
It's a common trick to stick serious in the title, so that people will thing "that's OK, if you've got to do something seriously bad to have your life destroyed on the whim of some official". But what they do is not define serious as "only serious things" so that once the law is passed without too much complaint - then it can be used against anyone.