The 30th Language Testing Forum was held at Lancaster University in 2010, the same venue as the very first LTF in 1980.
In conjunction with the event, a Special Issue was published in the journal Language Assessment Quarterly (Vol. 11: 2, 2014): Issues in Language Testing Revisited: Exam Board Perspectives and Future Directions
The conference organisers were also given permission by the British Council to produce an electronic copy of the book resulting from the first LTF gathering in 1980: Alderson, J. C., & Hughes, A. (1981). Issues in Language Testing. ELT Documents 111. London: The British Council.
This can be found at the LTF 2010 web page hosted by Lancaster university.