Original sentence: The "Piggate" scandal in the United Kingdom concerns the allegation that during his university years, British Prime Minister David Cameron put a "private part of his anatomy" into a dead pig's mouth as part of an initiation ceremony to the Piers Gaveston Society.The allegation was made by Lord Ashcroft and Isabel Oakeshott in their unauthorised biography of Cameron, Call Me Dave, extracts of which were published in The Daily Mail on 20 September 2015, prior to the book's publication.The book also contains details on Cameron's alleged use of drugs during his university days, as well as allegations that he was brokering positions in the UK government and knew of Lord Ashcroft's non-dom status and concealed it from relevant parties until elections were concluded
Edited sentence: On 20 September 2015, prior to the release of the book, it came to light that the book contains details on David Cameron's alleged use of drugs during his university days, as well as an assertion that there is photographic evidence of an alleged incident in which David Cameron, as part of an initiation ceremony to the Piers Gaveston Society, put a "private part of his anatomy" into a dead pig's mouth, including more serious allegations that David Cameron was brokering positions in the UK government and knew of Lord Ashcroft's non-dom status and concealed it from relevant parties until elections were concluded.The "Piggate" scandal in the United Kingdom concerns serious allegations made by Lord Ashcroft and Isabel Oakeshott in their unauthorised biography of British Prime Minister David Cameron, Call Me Dave