This happened at Luton yesterday. The airport was on low visibility procedures with CAT 3 holding points in use. The RVR’s were up and down with the top end at 550m and the bottom end at 300m. The controller asked him what his intentions were. He stated he wanted to make an approach and commented that he hoped that the easyjet in front of him would blow the fog away. Well it didn’t and he just landed anyway.