Try UK2000's version. OK, so its not STRICTLY freeware, but it is an amazing piece of scenery. It has animated traffic, vehicles that actually service your aircraft, and many other features that make it a great scenery. Download it from the UK2000 website, the only thing that is slightly annoying is a cube in the middle of the runway that nags you to acitvate it (pay for it) but the scenery functions fine without being activated. Who knows, one day you might even buy it like me with Gatwick