Permission we needed to shoot our trailers

For both of our trailers, my group decided to mainly use open spaces so we didn't need any permission. When we filmed the scenes shot in a house we used one of our houses as it was accessible. We decided to shoot a 'haunting' in sainsburies, however, we just asked them and said we were media A-Level students and they let us film our few shots we needed. A lot of our shots where filmed on wood lane