This site reproduces naval despatches as mentioned in the London Gazette.; they deal mostly with commendations, salvage, and bounty. However, here you will find official reports on the main battles of the Royal Navy during the World War 1 as published in the London Gazette. For those who want to see ALL the despatches from the Gazette for World War 1, this publication has listed them for you.
Royal Navy Despatches – World War 1