On our way from my NCE my wife and I plan to stop and spend a few days in either London or Paris. We are curious if the LHR or CDG airports have a fast track departures immigration lane open and if it is available to only first/biz class or alliance members with status.

I just spoke to a LHR airport representative who said that the airport does not have a fast track departures lane, but I believe that I've heard of them before. Does anyone of any knowledge of fast track departures immigration? Are these lanes typically open in major European hubs? If so, who can access them?