Fair enough, is it busses or large aircarft you fly?

The holding points south of 27L/09R at both CATIII and CATI are not great with regard to expedition. However hopefully the MLS install will solve this wrt landing traffic.

757/767. Just the 767 from T4 these days.

Wrong !!! 4-5-6 or more depending on the moons position :E :E

Its difficult to upset me really. Thick fur! :}
I was more confused about the reduced separation in the vicinity?

Ah, Mr Bear, I'm with you now. I just want to be in a position for the friendly (and possibly hirsute!) ATCO to be able to seize upon any opportunity for expedition that he or she can find - not still trundling along the long link past SB1.

G W-H

Hi,

The word "after" in this case of conditional clearance shall be replaced by word "behind"(phraseology says). In my opinion, no one of pilots will line up immediately behind departing/landing acft. Conditional clearance in this case may be given but pilot will decide how many seconds to wait to commence a line up behind. I instructed many times acft to line up behind but nobody did it immediately. All of them waited for a while and then did it, specially if the behind acft is lighter then previous one if they enter and depart from the same holding point.

BRGDS

The whole idea of the conditional clearance is to save time by putting the onus onto the pilot to comply with the instruction when he/she considers it is safe to do so. (Emfarsis on the last nine words) Hence the aircraft "creeping" forward as the previous rolls is doing the right thing and saving time that might otherwise be wasted because the controller was talking to another aircraft or another controller. Any controller who further interprets the instruction or adds caveats should go back to my first sentance. Any controller worried that a pilot may be too slow to line up because there is an aircraft on final should consider giving the pilot the situatonal information. "Behind the 737 rolling runway ... line up behind, additional traffic on four mile final." If the pilot wants to take his/her time he/she should decline.