Heathrow D - From a T1 BA boy - The normal SOP for us (never found a skipper to do anything different) is to take your slot, land and then sort it out. But we may quite often fly slowly to get as close to the required landing time as possible.. .Having said this we normally don't land at the crack of dawn so that resources are not available (Longhaul taking all the really early slots generally) and have shorter sector lengths that winds have less effect on our arrival time. i.e. the whole business is less of a problem.