Other cities won't face this to the same degree - but it's exacerbated in London because it's such a popular destination yet with antiquated infrastructure due to such structures being built so ahead of the curve - thus surprising platform gaps and corridors far too narrow to support massive commuter flows of a metropolis that has grown so much.
An aimless tourist could be knocked over if they don't follow conventions or aren't made aware of unusual hazards that more recently built transport systems won't have.
Other cities won't face this to the same degree - but it's exacerbated in London because it's such a popular destination yet with antiquated infrastructure due to such structures being built so ahead of the curve - thus surprising platform gaps and corridors far too narrow to support massive commuter flows of a metropolis that has grown so much.
An aimless tourist could be knocked over if they don't follow conventions or aren't made aware of unusual hazards that more recently built transport systems won't have.