We all like a tidy tube train.
The advent of two competing free evening newspapers in London has not helped the cause.
Where the Central Line terminates at West Ruislip, there are people employed to clear the trains of rubbish before they reverse and wend their way back into central London. During the evening peak they fight a losing battle as the trains are only sat in the platforms for a few mintes before they set off again on their return journey.
This pile of neatly stacked rubbish sacks is the result of the cleaners' work only part way through the evening peak. Mostly the contents were the aforementioned free newspapers.
I saw one train where the 'rear' cleaner only managed to get 1 1/2 carriages cleared before jumping out of the closing doors.
Helpful hint: If you are wanting to travel on a litter free train in the early evening, into London on the West Ruislip branch of the Central Line, travel in the back carriage.