Which bin for toothpaste tubes?
Usual answer in the UK
General waste General waste bin
Most toothpaste tubes go in general waste. Some newer tubes are marked as recyclable, and some brands run take-back schemes.
Also possible: Shop or take-back point.
Does every council do this?
Most councils follow the answer above, but bins and sorting rules are set locally, and a few councils still do things differently. If your bin has a sticker, or your council sent a leaflet, follow that. Enter your postcode to go straight to your council's guidance.