I was going to say call in. Firstly your going to separate yourself from other applicants by putting a face to the application form . It shows your interested to find out about the position even before you apply. By talking to them you will get ideas on what to put on application form and when it comes to interviews you will have an idea of the type of individual their looking for and answer their questions accordingly. On a side the company I work for take on approx 30 apprentices a year and generally speaking the more mature ones are streets ahead of the younger ones. I know your busy but if you can make the time go see them.