Alitalia, founded in 2009 is a government owned Italian airline (from March 2020) with 2 home hubs in Rome Fiumicino and in Milan Linate Airport. They also base in Catania Milan Malpensa, Palermo and Naples airports.
With its size of 91 aircraft, the Alitalia airline is operating on routes to roughly 100 destinations.
All their flights from London Heathrow are newly managed from Terminal 2.
The airline belongs to SKYTEAM Alliance and has its own Earn Miles account where you might earn 3 miles for every spent euro from their catalog purchases and of course from booking tickets with them, depending on the class and route.