The source on wikipedia for Air Iveria flying Gatwick - Tbilisi comes from avia.ge - an obscure travel agency based in Georgia. Avia.ge has a web page which states Air Iveria will fly the routes but the avia.ge is not currently selling flights on Air Iveria.
This source was added to wikipedia by an IP address (not a logged in person). The IP address has made only 8 edits, 2 of which referred to Air Iveria.