I just allied with this mob and cant access any special missions... Im one part short for a star league black knight and need the mission :D

Is there meant to be a mission with this group?

No ally mission with the Taurian Concordant.

13 free agent Flashpoints and 5 ally based Flashpoints. Here is the full list of Flashpoints from a post on the Paradox fourm.

Bourbon & BattleMechs
Criminal Minds
Davion Alliance
Extracurricular Activities
Headhunting
Joint Venture
Kurita Alliance
Liao Alliance
Marik Alliance
Operation: Flattened Earth
Steiner Alliance
The Braying of Hounds
The Defector
The Long Hunt
The Opportunist
The Steel Beast
Unwelcome Guests
White Lies

Thanks Mimo. I wishi it should have been obvious that there was no specific mission for Concordant. Spent 4 hours getting rep and wrecking a bit of rep with some others...

I didn't ally with anyone yet, but have now finished all the other missions in Career mode (120 hours or so of playtime). Trying to decide how I'm going to ally with all of the five big houses or if it's even possible in a single career. Guess that gives me something to keep playing towards.

I've been keeping a full lance of medium mechs ready to roll so I can do the 2.5 and 3.0 skull missions needed to bolster the relationships needed to do all five.