As far as Im aware, no Channel 4 aren't showing this interview, it would have been nice rounding off the series with it, but unfortunately us Brits miss out.
Actually, us Brits didn't miss out. If you have Sky, the Jay Leno special with all of the "Friends" cast was aired less than a day after it did on NBC in America only channel Ftn. It was a great show but sorry, it doesn't look like it will be repeated. Do look out for it though in the future!