Naval-History.Net has researched and published original data for 14 years. In the case of World War 2, this includes Admiralty War Diaries and Action Reports.
The War Diaries from August 1939 to March 1942 are combined with other primary sources into a day-by-day account. The period April 1942 into 1946 is covered by a growing number of War Diaries ranging from the Home and Mediterranean Fleets to the British Pacific Fleet. All can be found at