Permission to film- Bodiam Castle

We contacted The National Trust, who own Bodiam Castle, via email for permission to film at Bodiam Castle as we wanted to ensure that it was okay to do so. We received a reply from Heather Packham, who is the visiter experience manager, which stated that it was okay to film at the location as it is simply for amateur use. She also said that she will brief her staff that we will be filming on Saturday to ensure they all know whats going on to avoid us from being approached, we also must complete a photographers contract to prove that it will only be used for the purpose of coursework and not commercial use.