The first is film or lightweight plastics like dry cleaning bags, bread bags, shopping bags and the plastic encasing paper towels and toilet paper. The second is squeezable bottles – used for honey, sauce etc along with caps and closures.
Both types of LDPE 4 plastics are recyclable, but only the hard plastics like the squeezable bottles can in your council recycle bin. The film or lightweight plastics aren’t always accepted by council curbside recycling because the material gets caught in sorting machines. Some councils (and it is increasing) do accept lightweight plastics in curbside recycle bins, but you can also drop them off at your local supermarket soft plastic recycle bin where it is picked up by REdCycle. Please make sure they are empty and clean.
Check to see if your council accepts all LDPE 4 plastics in the recycle bin or where your closest drop off point is.