[MargaretR]

My good neighbour who manages my refuse for me, has told me that the large blue bag was full of empty Lucozade bottles and was placed next to our recycling boxes by persons unknown.

So it was not supplied by the recycling men and no near neighbours are known to drink Lucozade in such vast quantities.

The only local possible source is the workmen on the nearby building site, and the quantity could be a 6 months supply for a thirsty builder.