Sitting on Sector 23 at Swanwick having just issued a clearance to an Ascot off EGDL with a string of crossed out P times do you:
a) expect that the A/C will be airborne soon
b) expect to have to vector an old Herc round the skies just so that it stands a chance of reaching the standing agreement
c) expect to have a phone call from APP to cancel the clearance due to the A/C going tech
d) resign yourself that it wont get airborne until it can get in the way of all the Bristol and Cardiff Inbounds and then tangle with the TMA Inbounds and still not be able to make the standing agreement