Thank you again, stuckgear, for posting the FAR regs for Air Nav and Obstruction Lighting. It says it all, really. Point 3, Flashing high intensity white lights during daytime, yes please. Which is why in low viz I alway turn on my strobes, extra precaution cost very little. To quibble about light pollution over London is absurd.
757 hopeful raised a few points. He wonders if Battersea would be trying to contact the A109; but any attempts to do so would have to be limited, so as not to obstruct the frequency. Also Battersea can only report visual conditions at the airport. And can they really close it down if conditions are bad? that might be just when a refuge is badly needed.
Satcop says that Battersea has a cloudbase recorder to assist with met observations; I wonder how on earth that could work in rising or drifting fog?
At our gliding club, which takes a keen interest in cloudbase, we normally have to send an instructor up the wire first to see at what height the glider vanishes...