First, on the point made by the noble Lord, Lord Bassam, it is not to be argumentative—I am sure that there is much discussion to be had—but the intention is absolutely not to lower the standard for a well-intended request.
Sadly, a number of requests that are not well intended are made, with purposes of cynicism and an aim to disrupt. I can give a few examples. For instance, some requests are deliberately made with minimal time between them. Some are made to circumvent the process of legal disclosure in a trial. Some are made for other reasons designed to disrupt an organisation. The intent of using “vexatious” is not in any way to reduce well-founded, or even partially well-founded, attempts to secure information; it is to reduce less desirable, more cynical attempts to work in this way.