Gatwick has a second runway 08L/26R. It's was called the emergency runway, the northern runway and other words to soothe local pressure groups. There's a parallel taxiway between the two which an aircraft famously used one night.
So if after 2019 Gatport Airwick start digging it will be their 3rd runway!
Just think, if LGW was KLGW the US ATC would be firing Flybe 400s off the northern runway in between landers and a taking offers all day long.
SGC