Sue, do you not have a big brown wheely bin for your three brown sacks of stuff? If not, then that's the reason why the bin men didn't collect your sacks but just your small brown wheely bin? Edited to add that we've had a big brown bin for garden stuff e.g. cuttings, hedgerows, etc. for years now which we fill with the southwark brown paper sacks available from libraries, garden centres and southwark and it's part of our fortnightly collection.