Chewing gum (grumpy old man)

All around South Kensington tube station (and on every urban pavement everywhere) there is a patina of chewing gum; enough that there is not a single square foot unmarked. It's disgusting and shaming. There are four things that could be done.

Educate and shame: why not have notices in all the tube stations and officials empowered to level on-the-spot fines? 

Clean and improve: there are machines that dissolve and remove chewing gum. Use them.

Provide bins: between Imperial College and the Cromwell Road there are no - not one - rubbish bins. How can this be possible in the most visited part of London - mainly by children?

Legislate: force manufacturers of gum produce a product that is biodegradable.

This isn't rocket science....