If your drone is under 100 grams you can fly it up to 120 meters high with or without oak trees (trees are not part of the law) within 5.5km of the controlled airport.
But yours is 1,000 grams - so in your location you will be breaking the law should you fly it. Council Ranger or CAsA on a Christmas morning would be like winning lotto.
So to answer your question it totally depends on the weight.
You can and I know was recently done - fly a sub 100 gram drone, inside an open hangar at a busy International Airport.