I would just like to say thank you for letting Dan and I cover the investigations last week.  In general both nights were very quiet, with hardly any wind or noises at all.  There must have been some severe drafts as every now and again it would get very cold.  About 2.30am on the morning of 2nd April I saw what seemed to be a flash of light at the bottom of the stairs, just by the black elephant.  Dan saw one a few moments later behind both of us by the kings room doorway.  At first we thought they were actually flashlights but it must have been fatigue setting in. Not spooky, but it gave us an adrenaline rush for another 30 mins or so.