I was the LHR south director just before 07:00 this morning. I was not aware of any ATC discussion about delays, which I would expect to be if a possible div from KK was in the offing.
Just to be clear, nobody in ATC is going to tell any Captain that he cannot div to an airfield. We would tell him the expected delay and then wait for HIS decision. If there is a company policy not to use a particular airfield as an alternate then what is the purpose of specifying it as an alternate on the FP? And that being the case, one must arrive at the LL/KK holds with either 20 minutes fuel if "no delay" has been issued or sufficient fuel to get to the actual alternate.
Both the TC and LACC area sectors know what delay is being promulgated at Heathrow/Gatwick at any time; there is no reason why anybody in doubt about their fuel satus could not find out the anticipated delay long before they get here.
Everybody knows what Heathrow is like early in the morning. I cannot imagine why anybody planning to use Heathrow at that time (even as an alternate) wouldn't factor that into their fuel plan. Surely, there must be something we don't know.
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