The address for The Drive In Cinema is The Drive In, Troubadour Meridian Water, Harbet Road, London, N18 3QQ and they can be found just off the North Circular (A406).
There is no limit on the amount of passengers per car that you can have, as long as each person has their own seat. They cannot permit vans, buses, lorries and other large vehicles. They don't currently allow motor bikes but are looking at guidance to see if this will be possible in the near future.
Book your tickets now at www.familytickets.com/collections/films