This new extension was, together with the existing tracks back to Acton Town, the first section of the Underground's surface lines to be electrified and operate electric instead of steam trains.

This new extension was, together with the existing tracks back to Acton Town, the first section of the Underground's surface lines to be electrified and operate electric instead of steam trains.

This new extension was, together with the existing tracks back to Acton Town, the first section of the Underground's surface lines to be electrified and operate electric instead of steam trains.

This new extension was, together with the existing tracks between Ealing Common & Acton Town, the first section of the Underground's surface lines to be electrified and operate electric instead of steam trains.

This new extension was, together with the existing tracks back to Acton Town, the first section of the Underground's surface lines to be electrified and operate electric instead of steam trains.

This new extension was, together with the existing tracks between Ealing Common & Acton Town, the first section of the Underground's surface lines to be electrified and operate electric instead of steam trains.

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