Original sentence: Churchill was not an academic historian, he was a politician, and was in fact Leader of the Opposition, still intending to return to office, so his access to Cabinet, military and diplomatic records, which was denied to other historians, was questioned
Edited sentence: By what right, it was asked, did he have access to Cabinet, military and diplomatic records which were denied to other historians.Churchill was not an academic historian, he was a politician, and was in fact Leader of the Opposition, still intending to return to office.Churchill's history thus became a semi-official one