LSE在官網貼出聲明指出，根據LSE和倫敦大學的紀錄，蔡英文法學博士學位確實在1984年由倫敦大學所頒授，論文副本在當時也送至倫敦大學議會大樓圖書館（Senate House Library）；而蔡英文的論文也出現在高等法律研究所（IALS）於1985年出版的文件指引「Legal Research in the United Kingdom 1905-1984」中。
LSE statement on PhD of Dr Tsai Ing-wen
LSE has received a number of queries regarding the academic status of our alumna, Dr Tsai Ing-wen, President of Taiwan.
We can be clear the records of LSE and of the University of London - the degree awarding body at the time - confirm that Dr Tsai was correctly awarded a PhD in Law in 1984.
All degrees from that period were awarded via the University of London and the thesis would have been sent first to their Senate House Library.
The Senate House Library records confirm that a copy was received and sent by them to the Institute for Advanced Legal Studies (IALS). There is a listing of Dr Tsai’s thesis ‘Unfair trade practices and safeguard actions’ in the IALS index document “Legal Research in the United Kingdom 1905-1984”, which was published in 1985.
Dr Tsai recently provided the LSE Library with a facsimile of a personal copy of the thesis, Unfair trade practices and safeguard actions which is available to view in the Library Reading Room. We understand Dr Tsai has also provided a digital version of her personal copy to the National Central Library of Taiwan.