At a time when a new market forecast, commissioned from Oxford Economic Forecasting by the National Housing Federation, predicts that London's average house price will soar to nearly £400,000 by 2011, housing associations are doing all they can to help. By building increasing numbers of affordable homes and developing the properties and services they offer to reflect London's changing population, organisations such as Genesis Housing Group, Notting Hill Housing Group and the Peabody Trust are using innovation to help defuse London's housing time bomb.