Sir, A postscript to Annie Skinner's warning letter (October 27) of serious health risks that could be caused by fortnightly collections of wheelie bins and, on alternate fortnights, recycling boxes: surely there is an irony in the imminent intrusion, particularly in Oxford's conservation areas, of these variously-sized green and blue plastic commodities - albeit for the 'green' purpose of increasing recyclable waste removal - into predominantly well-tended and aesthetically-pleasing house frontages.

The promised fortnightly collections of the unsuitably-contained plethora of waste, as well as creating potential environmental damage, will do little to preserve and enhance our city scene.

Prue Drew (Ms), Oxford