What do Tube users make of standing-only escalators?
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A three-week trial at Holborn Tube station found queuing was reduced when people stood on both sides of the escalator - rather than the decades-long tradition of standing on the right and leaving the left-hand side free for people who want to walk.
Now the standing-only trial is to be extended - but with one escalator still available for people keen to walk.
BBC London asked passengers what they thought of the new rule.