Remove the aitch bone from the top of the leg of lamb or ask your butcher to do it for you. This makes it so much easier to carve later. Then saw off the knuckle from the end of the leg.
If possible ask your butcher to remove the aitch bone from the top of the leg of lamb so that it will be easier to carve later, then trim the knuckle end of the leg. Season the skin with salt and ...