Aviator sunglasses - Brian Cox - Mending the Line
The sunglasses have a gunmetal frame, aviator shape, with cable temples (side arms that wrap behind the ear). The brand is not yet identified.
The classic Ray-Ban RB3025 aviator sunglasses are a great alternative for these sunglasses. Available in many colors including gunmetal.
Get the Ray-Ban RB3025 on Amazon.
If you want Cable Temples then the Ray-Ban RB3030 Outdoorsman is a good option.
In the same film, Sinqua Walls wears Oakley SI Ballistic M-Frame glasses.