People have complained in the past[1] and only received the same vague BS that the blocking notice gives. The Daily Mail ran an attack piece when BBC Future launched[2], but it didn't prompt them to change anything. Whether due to incompetence or apathy, BBC Worldwide seem incapable or unwilling to improve their communications.
[1] http://halfblog.net/2013/01/16/why-is-this-bbc-website-not-a... [2] http://www.dailymail.co.uk/news/article-2208251/Global-BBC-w...