I received a personal message last night about contact hours in the English Department. My response most likely applies to all other Humanities departments so I'm posting it here:
In the English Department, you can arrange to meet up with tutors/professors/lecturers at any time, there are no strict rules on this. All staff at King's do have set office hours, normally 2 hours a week on different days. This is when you are completely free to talk with them in their offices about anything really, and they are pretty much guaranteed to be there. Also, seminars are a great place to talk with your tutors and engage with them on an intellectual level.
As far as feedback is concerned, for each essay you submit, you get a very detailed response to accompany your grade. In my experience at King's so far, all the markers put so much thought into your essays and it really shows in their feedback.
- Ben