We contacted Harry "Knyt" via Facebook to ask him whether it was alright for us to use his track in our music video and if he would like to feature in the video.
We have received his reply and he said that it's fine for us to use his track and he would be happy to feature in the video. A bonus is that he only lives down the road from the school and is therefore very local to us and the locations we plan to use.
:D