Filming Locations - Carver Barracks

We recently went to Carver Barracks to have a look at the Officers Mess as the bar it has is very posh, and very stylish which is what we need to live up to the personality of our protagonist. Unfortunately we couldn't actually find the mess manager in order to ask for her permission to film there. We were thinking about finding contact details for her hut we have to keep in mind that these people are cautious with letting us come in to use their facilities.