My paternal grandmother died recently, and today I was round there with relatives clearing through stuff and came across this medal. Nobody on that side of the family is in contact with each other, so I'm not sure who it belongs to, and there's nobody we can ask about what it was awarded for. A search for it on the internet didn't really yield much as we didn't have enough details about it to have useful search terms.
Hello there! As your question is related to looking for identification/information regarding military personnel, our Guide on Military Identification may be of use to you. It provides a number of different resources, including how to request service records from a number of national agencies around the world, as well as graphical aids to assist in deciphering rank, unit, and other forms of badges or insignia. While the users here may still be able to lend you more assistance, hopefully this will provide a good place to start!
This is a British War Medal, awarded to any member of the British Armed Forces with 28 days of service during WW1, as long as they had served either outside the UK, or in an active war zone. However, it has the ribbon of the Victory Medal, which was awarded to anyone who was mobilized by the British Empire, and sent to a war zone between 1914 and 1918, as well as a few post-war actions (mine clearance in the North Sea, and the British intervention in the Russian Civil War). As such, we can reasonably guess that the recipient was awarded both medals, especially as by qualifying for the War Medal, they qualified for the Victory Medal. However, these medals are pretty common. You could start by looking at this page on the British National Archives, which should give several possible avenues for further research.