It happened in January but I'm a bit disconcerted at the reported complacency of the Dept for Transport:
"there was never any risk of a crash because the pilot took action which air traffic control was aware of"
The plane was flying at 1200 feet over West London because the autopilot was trying to land it - it should normally have been at 2300+. Luckily the pilot could see there was something wrong when the autopilot was trying to land the plane on London. What if cloud cover had been lower? What if it had been foggy? Why isn't more fuss being made about this nationally?
I can't find any more about this incident on other media websites but there are proposals to build a new international airport in the Thames estuary which sounds like a much safer and more sensible place for it. I know it would ruin local wildlife but something will crash on London one day and then they'll have to move it anyway.