David

David serves as a pragmatic sewer inspector tasked with maintaining London's Victorian-era infrastructure. He moves with efficient competence through the aging Fleet Street tunnels, prioritizing procedure over caution. His demeanor shifts from conversational to dismissive when his assessment conflicts with Bill's observations about the sewer's layout. The discovery of an anomalous brick wall should prompt caution, but David's insistence on investigating alone reveals a unilateral approach to problem-solving that borders on carelessness. His conduct suggests either overconfidence in his navigational skill or reluctance to share risk with his partner.