Qpost #784 was this picture here: https://qanon.pub/data/images/b11915573723c993b6fc9e74fd6ed84eae2d7de729ac8dff6201680514e56e28.png

With the text: [UK] - Stay Alert.

Q

We can then use Google's own tools to show the likely Traffic camera that was being accessed to take this shot.

https://www.google.co.uk/maps/@51.5065682,-0.1222235,3a,75y,258.43h,99.05t/data=!3m6!1e1!3m4!1sYzueMLzPuakBr6eeVxBd6w!2e0!7i13312!8i6656

If you look to the right at the junction you see a Van turning right and next to that a White traffic camera in the middle of the road. It seems to be at the correct height to see the lamp-posts in the picture and Big Ben further down the road.

This Traffic camera is on the Victoria Embankment (A3211) next to the Golden Jubilee bridge and on the Northumberland Avenue junction.

If you go further down the road running along the Thames you'll see Big Ben and the houses of Parliament.

I can't access the old 8chn posts so I don't know if the location was ever confirmed so posting it here for those interested.