[belter]

An Helicopter, has been running multiple 360 degrees rounds, around the whole perimeter of Heathrow for the last two hours or three hours.

I wonder if they are looking for something or somebody and there is more to this story. (click on the helicopter icon to see previous runs): https://www.flightradar24.com/GINTV/3990e5fc

[Symbiote]

It's the BBC's news helicopter, according to the first result of a Google search. It's very easy to make these searches, and not invent conspiratorial nonsense.

[belter]

Flights just resumed...first landing: https://www.flightradar24.com/BAW71SK/39910df8

[FartyMcFarter]

If it was a police helicopter you wouldn't see it on flightradar24.

[t0mas88]

That looks like a news reporting helicopter?