I don't know what Heisenberg plans for TL
but it sound for British space program the list are former colony or oversea territory.
again Guyana would be the best, because easy to reach from England by boat or aircraft
see the reason why the french build there space port in French Guiana!
Guyana also has the advantage of already being in the ESA.
Cape York peninsula Far North Queensland. It has a much drier climate than South America without those paper wasps which plague the French, is in a stable, first-world nation capable of supplying significant support locally, and has a HUGE launch corridor even for polar orbits.
As for the Tyranny of distance, once a rocket is loaded on a ship or plane the extra distance it flies isn't a crippling cost impediment, especially if this is offset by using local people, fuels and other things for the launching.
Doesn't look like it to me, unless you mean overflighting Queensland, which may admittedly be acceptable if there aren't that many people around...
Still, most democracies have gone with coastal launch sites for a reason. Woomera is about the only exception I'm aware of that was seriously used, and not for that long.
It is still annoying; again, look at SpaceX's experience with Kwajelein.
The polar corridor took it back over the desert, with the 1st stage drop zone being in the huge Woomera area.
I don't doubt its annoying, but annoyance is a relative thing an CYP may have other factors which balance out some of the annoyances such as a lack of those wasps that build nests in Arianes.
What about Brazil, folks? Would the Brazilian state of Amapá be fine? It is not too populated, it is near Guyana and right on the Equator. Also the nearby area could support some quite decent industry if necessary - Lots of ores and minerals in Northern Brazil, most of them in Pará. Just ship that stuff through a port to Amapá, launch rockets.
Another alternative might be the northern part of Pará, desolate as fuck there.
Here's a question: presume a technological situation where rockets and stages are not being shed as vessels ascend to orbit. What about Sao Tome?
Also, if we're thinking grand and planning in terms of a space elevator, does proximity to large mineral resources and industrial infrastructure become necessary? If so, how does that change the answer?
Ah, just looked up a list of world iron ore producers: Australia, Brazil, China, India.
IIRC, the best place to build a space elevator is off the coast of Ecuador: very few hurricanes, equatorial, not much wind or lightning...
The Galapagos Islands. 0 degrees latitude, 90 degrees longitude, 800 miles west of the Colombian coast. Access by sea and air from North America, the likely major user.