Aviation Week Information Network (AWIN) is based in the US but owned by UK-based Informa Group.
Airportdata.com and AC-U-KWIK (online and books), along with Air Charter Guide, are part of AWIN and are used by pilots and flight departments / aircraft operators worldwide.
The Aviation Week Group also publishes Aviation Week & Space Technology magazine, and Business & Commercial Aviation magazine.
Ian Sheppard is a Senior Researcher for Airportdata.com and AC-U-KWIK based at Fairoaks Airport, UK.