empty pov escalator passenger platform london british handheld lockdown information train station public transport coronavirus information sign railway station st pancras train station platform british railways london underground marks and spencer st. pancras station 4k european-trains commuters deserted GOPro commuter trains people walking escalators City of London information board face mask pandemic Railway Stations travelers Desolate quiet Covid 19 face covering empty road empty streets Central London Pret a manger Show all