>> Argh, geology I know, geography, I'm not so good at... <<

It's okay. I know the general shape of the United Kingdom, but beyond a few major aspects, I'd have to look up details.

>> and thanks for the vote of confidence, I'm hoping to write more set in Britanna itself. The end of The Exeter Incident will involve a lot of Britannic society. I'm also contemplating a second half to The London Trip, once I get a bit more of an idea on what..<<

Go for it.

Confess I'm curious, have they cleaned up the Thames or is it an open-air dump like here?