I think the redevelopment project is fantastic for the Horniman and the local community, which stands to massively benefit from it - for free. I don't have too many complaints about a bit of disruption: it's clearly sensible and normal for the work to be done over summer to prevent creating an unworkable mudbath.
Roz - the info on the Horniman website is:
Areas of the Garden which will be closed
•The Bandstand Terrace and Sunken Garden will be closed until September 2011.
•The Animal Enclosure is closed until Spring 2012.
•The footpath from the Avenue to the Wildlife Garden which runs parallel to London Road will be closed until Monday 18 April.
•The path at top of Avenue running towards Meadow Field will be closed from mid-April until mid-June.
•Outside toilets will not be available from 3rd May until mid-June.
•The north side of Meadow Field will be closed for the first two weeks of May.
•The Horniman Drive entrance which leads to the Avenue will be closed from mid-May until mid-June.