Buildings require integrity if they are to be of any cultural value to mankind and feed spiritual and artistic longings. There is a trend today, for the sake of being safe and avoiding challenging decisions, to hide new buildings behind mediocre, so-called historic façades. This is not necessary when Britain has today the most talented architects in the world. Conservation is also at risk of devaluation from this tendency, when under its banner whole buildings are demolished and rebuilt with new material, in near like form but stretched vertically to fit modern floor-to-floor heights. This is a nationwide problem but is intensified in London, Glasgow and other large cities. This subject is dealt with in greater measure under the PPG15 project  which was published under the authorship of The Richard Coleman Citydesigner.