Most of my testing was performed outside, but I even managed to test the 5G signal inside a lunch spot and Charing Cross Station. Inside a Pret a Manger, I was averaging around 60 Mbps, compared to the 200 Mbps outside the building. But inside Charing Cross Station, I saw speeds of 200 Mbps. I even took a train from Charing Cross Station through to London Bridge, and the 5G signal was maintained for part of the journey between Waterloo East and far outside of London Bridge. Even with the train moving, I was consistently hitting speeds in excess of 200 Mbps, and at one point when it was moving slowly, this jumped all the way up to 980 Mbps.