It was with some trepidation that I set out for deepest darkest Millwall in search of Paul St George’s workshop. But amazement took the place of fear when I finally found him, sitting inside his Telectroscope!

At first I though this glimpse of him in the video (above) might be an image of him sitting at the other end of his Tunnel in New York! But then out he popped to reveal that everything is on course.

The device itself is a lovely confection of brushed metal, shiny pipes, valves and stops and lenses. The drawings that we’ve seen previously are actually surprisingly accurate. I assumed Paul’s great grandfather had perhaps used a bit of artistic license but it turns out that what he’d imagined in his head is pretty much what Paul has built.

Although Paul won’t commit to a precise date, he’s adamant that he will break through to the surface by the end of May.