I'm not looking at grad schemes in this sort of industry, but I've also already had a couple of rejections. It's hard and really competitive, you have to prepare for knock backs. But just remember, all it takes is one successful application, stay positive and honestly they do get easier (you get better at applying). You have missed some deadlines but the majority are in January so you still have time. Just make sure you spend a good amount of time on each application you send off and you tailor each one to the specific grad scheme - it's better to have a few really good applications than loads of mediocre ones. Good luck!