I might get flamed for this - but I have to actually hand it to AI (yes, - I am giving Air India a positive comment).
AMD - DEL - LHR, when connecting in DEL for the 7 hour layover they took the time to flag me as a important pax, escort me to the lounge in the middle of the night, get me through security faster etc etc. Their level of service as a *G in my transit airport was honestly impressive.