FSX/P3D. For the few of you who do not have Orbx FTX ENG and/or Aerosoft London, there is another option for you. But there is a catch, you must have PrealSoft HD Cities London Photoreal Scenery or another London Photoreal Scenery in order for this product to work. It is indeed a lot of autogen which is arranged in the true form of London. If your default London is looking rather bland, you may give this a shot. More info via the source link.