LHR based crew is only one day interview. The interview is as follows:
You report at the cx ticket sales desk, its by the cx checkin desks. You wait in that seating area just next to the sales desk. Someone will then come out and collect you and the rest. Once you're in the office, you wait with the others in the waiting area and fill out some forms which you hand them back. Then you are called over for the document checks and once that is done you return back to the waiting area for the height check, then wait again for the language test. The language test is very easy, they just talk to you in a normal conversation. Once you pass, back to the waiting for the one-to-one interview.....Once that is over, you are given a yellow card to say wait for 6 weeks. One advice....keep smiling when you hear the salary.