:::First of all I suggest that you read Open Government Licences.  This removes objections as per WP:COPYLINK. Secondly, the statement tha tteh host website is unreliable is in itself a livbellous statemenht, unless you can prove the same.  In short, unless you are accusing the UKMA of falsifying the document, there is no problem in linking to it - after all, we are not publishing the view of the UKMA, but the view of the the Government.