Red dots - [ANSWER]

GM SV/trail view.

Red dots unrelated to the subject.
Not convinced they are actually on the ground or are lens related.

A clue

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Well found krenek and Walter

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The Prime Meridian mark near the O2 arena and East India station.

i've been mentioning @ proboard's F&G how worse are google services everyday, and google earth's too

for instance, a few days ago i commented that china satellite images and google maps haven't been matching for years (here)

it has been the same problem for the prime meridian in google earth: see greenwich, almost 100 m difference with the real one:



gosh, it has ALREADY been mentioned in 2006 @ the very good google earth blog (unfortunately now inactive)

google, they just care about money and monopoly, not about quality or about users

162 views

Aug 15, 2020 5:25:35 GMT krenek said:

i've been mentioning @ proboard's F&G how worse are google services everyday, and google earth's too

for instance, a few days ago i commented that china satellite images and google maps haven't been matching for years (here)

it has been the same problem for the prime meridian in google earth: see greenwich, almost 100 m difference with the real one:



gosh, it has ALREADY been mentioned in 2006 @ the very good google earth blog (unfortunately now inactive)

google, they just care about money and monopoly, not about quality or about users

162 views

I agree totally.  The mismatch between actual Prime Meridian and Google Earth/Maps is quite pronounced.  Their reasoning is that we can now use satellite accuracy rather than transit instrumentation.

BUT - if the Prime Meridian was set in by whatever instrumentation, then surely it's the satellites that need a little tweeking not a line that is set in stone, steel and monuments.