Possibly not - the initial deliveries are to easyJet Switzerland, and while the A319s will appear in the UK, it will be as inbound flights from Switzerland. I don't know where easy fly to in the UK from Switzerland, but I think Gatwick and Stansted are more likely. If Luton is served from Geneva then you'll see A319s. If Geneva is served from the Luton base instead (if you understand the distinction I'm trying to make) then the answer is no, not yet.
I don't know when easyJet - the UK airline - will receive A319s, a couple of years maybe? It's a long delivery schedule, if memory serves.
fly Saha Air 707s daily from Tehran's downtown Mehrabad to Mashhad, Kish Island and Ahwaz