What was on the initial application form? What questions were asked and information wanted? It's good to know so i can have pre-prepared answers to get my app in quick when another driver job.comes up. These days jobs adverts are taken down quickly if it attracts 100s of appications.
Northern recruit for drivers in various locations pretty frequently and they have a standard few questions for which you have to give 'x' number of words. IIRC they are generally based around your motivation for the role, skills and experience related to the role, concentration skills and your ability to handle difficult/pressurised situations.
Keep an eye out on their site and even if a driver job comes out that isn't in your area the application form will give you a rough idea of what to expect when one does appear in your area. They like to keep you on your toes mind and do mix it up a bit by tweaking the questions from time to time and also asking the same question the following year but with a different number of characters.
One of the biggest and most important tips I would give to anyone applying for any role with Northern is if you do submit an application then you have to regularly check your correspondence through the careers site (i.e. twice a day). You cannot rely on receiving an update such as an invite to interview etc to arrive in your personal email inbox. Everything is done through their site and if you don't check regularly you can miss important updates!!
All the best with your application.