I am aware of Bucks Familiarisation test, Test A, Test 1 and Test 2. The comment was made about this years 11+ entrance exam for Bucks because my child took the test this year with these children.
It might be a good idea for you to report this to someone. There have been instances in some parts of the country where people running tutoring establishments have had a relative who has had access to the real 11+ papers. This is especially likely in areas where papers are used more than once - I think something similar happened in Warwickshire one year, although things have been tightened up now I believe. If this is what has happened the sooner it is dealt with the better.