British Isles. Is that term obsolete or still popular?

There are a few states and governments that use the term, but not many. For example, in Indiana the legal age for sexual activity is called "sexual misconduct with a minor" they do not use the term "age of consent" at all. Rhode Island, I remember reading, actually does use the term age of consent in its law, but that's pretty much the only time I've heard of it being used as a formal legal term. So what I'm saying is true 9 out of 10 times, that states and government do not use this term. I used to believe it was a legal and was criticized by Malke2010 and Flyer22 for using it on wikipedia without pointing out it was not a formal legal term. Also, statutory rape is not a formal legal term either. I found a source for my statement that the British Empire is not a formal legal term, Pax Britannica by James Morris, I remembered reading it when I was in middle school and looked up the quote that I remembered on google books.

What this amounts to then, is that some governments sometimes use the term. I don't really know what the Wikipedian guys say, but in any case we shouldn't just take their word for it. Also check out this Google query for "age of consent" on government websites: [1] Keep in mind that we are descriptivists and not prescriptivists, so we document the actual usage of a word, and not what some authority says the usage is or should be.