Business carries on at Selfridges, where German-made goods are being replaced with English products. Harry organizes a patriotic concert to benefit the troops, featuring a popular music hall tenor (portrayed by Alfie Boe) who gets Lady Mae (his former stage partner) to join him. Miss Mardle’s new lodger, a Belgian violinist, also participates in the concert, raising some eyebrows. Amid the festivities, a complex drama unfolds that sets the future course of events for Henri and Harry—all while the unsuspecting audience sings “It’s a Long Way to Tipperary.” It’s a very long way indeed.