in my line of work i see the results of recycling at various places, plastics,household electrical, scrap metal and garden rubbish .trust me they might be filling a dustbin lorry, but you may have two or three working the same round,recycling is a big moneyspinner no way are they going to waste (pun intended) this by mixing landfill with recyclable material.
just up the road from timbo is one of the country's larger plastic recycling centres,ECOPLASTICS,they have just invested £20million on a new plant and they get daily deliveries from council recycling centres.garden rubbish is recycled into compost a few miles from timbo ,near robin hood airport
just because you see a lorry emptying bins they have plenty of lorries it is a major undertaking,dont jump to the obvious conclusion,they pay fortunes for landfill, so no way would they mix and waste money.
mike