Also FindMyPast and Fold3 sites are good for a research. You can specify only a family name and service number. Also on FMP site then you can narrow down WW1 etc,
If you pass on some of the service numbers and names I can have a look at some stage.
Also, you can mainly research up to WW1. Anything for WW2 and after you can only be able to pull a medal index card from the National Archive site and then if you are lucky, using a person full name and aprox. year of birth ancestry or FMP.