When we lived in the centre of Edinburgh (which probably isn't even that polluted compared to London) I was amazed at how dirty the white paintwork on windows w

When we lived in the centre of Edinburgh (which probably isn't even that polluted compared to London) I was amazed at how dirty the white paintwork on windows would get in relatively short time periods. Now we live out in a rural area and its very noticeable how cleaner windows and paintwork are - the same also applies to our lungs!