We were going to do the vit k orally and the midwives didn't care- brought us the forms to sign with oral indicated etc. But when it came to it they suggested that the injection may be better as our son had a large bump/bruise on his head and we agreed. They weren't at all pushy though and the injection wasn't given until he was about 6/7 hours old when they did the other routine stuff (like weighing) as well.