Affordable (whatever that means everything is expensive in London) or otherwise with balconies should not be used for publics dirty laundry to be shown while I am walking on the streets to see, it lowers the tone of the area and gives a poor reflection on the area, especially to those who are trying to sell their properties or those that are trying to spruce up their areas.
The Mayor of London and those that plan properties in London should also consider making balconies for people at the back of the buildings especially when they have to pay a extortion on their rental or mortgage, balconies at the front should be used only to sit and relax or made into a little garden, no-one wants to see other peoples underwear on show! were not living in European countries where this is a tradition and they are a accustom too, we do not want to have the same as London looks grey as it is and to have laundry on exhibition will make London look even worse as it is.
People who are not privileged to have a balcony at the back of their properties should make use of other alternatives either invest in a tumble dryer or take their washing to the laundrette or even buy the new thing a upright tumble dryer on a tripod for small spaces, I have it and it is fab and does not waste a lot of electricity, anything is better then waving around dirty laundry in public.
Londoners have certainly forgotten the meaning of RESPECT and those around them.