London is One of the more polluted cities on the planet, and sad to say, pollution has a serious impact on carpets. High-quality particles from traffic fumes, smoke, dust and industrial emissions settle deep to the fibres, creating carpets search boring, lowering their softness, and in some cases attracting humidity https://www.google.com/maps/d/edit?mid=13MGomgMQMNLTVAmHPBpd7Xljs48dPtE&usp=sharing