Can you recycle plastic milk bottles?
HDPE milk bottles are collected by all UK councils and are recycled back into new milk bottles. Rinse out milk residue (sour milk is a top contamination complaint), squash, and put the cap back on. The little foil/plastic seal under the cap goes in general waste.
Tips
- Rinse with a splash of water and shake
- Caps back on — they're recycled too
Which bin does it go in?
Recycling bin — rinsed, cap on
Background: Plastic numbers 1–7 explained.
Also searched as: milk cartons plastic, HDPE bottles, 4-pint bottles.
✓ Checked against current UK guidance: 14 Jul 2026. Spot an error or an out-of-date rule?