Every-time you buy a large plastic bottle in the Netherlands you pay a small extra fee.
You get this fee back when you bring back the bottles.
I love this idea. We used to have the same back in the day, with glass bottles.
I don't know about London but we recycle our plastic bottles in Brighton and Hove, along with cardboard, paper, foil, glass etc. There are bin on the Streets where we put it.
Also, if you go to the Municipal Dump you can recycle all sorts of other things as well. 😁