Grim news reaches me that the Interaction Centre in Camden, designed by Cedric Price more than 20 years ago, is being considered for listing. The whole point of the building was that it should only survive if it met the changing requirements of its users. This sort of thing never bothers English Heritage art historians. I suppose we will also be subjected to dreary nostalgic magazine articles about the project, just like Price's other listed building, the Regent's Park Zoo aviary. He describes the latter as 'an albatross'.