Thanks for catching that! Not living in the UK my familiarity is mostly with the topic as an example of civilian ELINT and the modern “anti-myth” that this stuf

Thanks for catching that! Not living in the UK my familiarity is mostly with the topic as an example of civilian ELINT and the modern “anti-myth” that this stuff never worked/existed and it was a scam by the government since the 1950s. It’s past the edit window so I can’t fix that up in my comment unfortunately