Gallantry awards and similar (including Air Efficiency medal, for example) from WW2 are engraved around the edges. The standard campaign stars, and the War Medal and Defence Medal, were never engraved with names upon issue.

All WW1 medals were engraved, including the standard campaign ones.

Campaign medals now are engraved, and my son’s Iraq and Afghan medals, for example, are engraved around the edges – but not so with WW2 ones unless done privately.

By the way, when medals are worn by widows or next of kin the convention is to wear them on the right breast as opposed to the left, but I am not aware that the order of hanging them is reversed?