I'm surprised to find that Shoreham (Brighton City) Airport is not listed under UK Airports.
IATA ESH
ICAO EGKA
I can't see a way to add the info myself, but feel that this important Airfield should be on the list.
First opened in 1911. It is the oldest licenced Airport in the UK. With it's wonderful Art Deco Terminal Building put up in 1936.
It played an important part in both WWI and WWII, and was the home of Miles Aircraft for many years.
I have also noticed that your data base has IATA code ESH listed as Sharurah Airport in Saudi Arabia. Thie correct IATA code for this Airport is SHW
John R