We have an interesting combination of release and freedom of information request. We were directed to a recent FOI request that was made to the University of York (in the UK) asking for details of any policies that they might have regards the registering of academic visitors to the University. For the purpose of visa monitoring. The result of the FOI request can be viewed here, marked by those making the request as "partially successful".
We also recieved a copy of the request sent to departments providing the details of the required information, and an example of what information is to be logged. Files attached below.
Whether the guidance constitutes a 'policy' or not, and whether York complied with the FOI request or not, we leave up to you. We draw your attention to one of the answers.
"In response to questions 3, 4 5 and 6: there is no specific policy or guidance for visiting staff or students."