Edgware to Hendon ( Greater London ).
First few shots look like out takes / cuts from edited story. C/U of Lt. Colonel Brabazon (aka Lord Brabazon of Tara ) standing in door of train carriage. Point of view shot from front of train travelling through tunnel. Train comes out of tunnel and through station.
Full title reads at 01:51:01: "World's largest tube. London's new traffic artery opened by Lieutenant Colonel Moore Brabazon".
C/U of Brabazon pulling lever in box, he appears to be in an Underground tunnel. High angled shot of Underground train pulling into over ground station. M/S of Brabazon looking out of carriage window of stationary train. M/S of crowd on station platform.
More cuts follow at 01:51:44. Iris out from black, M/S of two women and some children playing in front of church in rural setting - looks like cuts from another, unidentifiable Gazette story. More shots of Brabazon pulling lever.
Note: a Pathe website user informs us that the station featured in this film is Morden underground station and that the station platform is the Morden depot.