Charity leads tribute to "a truly wonderful gentleman".
The charity, which currently rescues 250 hedgehogs a year, is moving to a new home in Buckingham.
The event is hosted by the University of Buckingham, which said it hoped to reschedule for October.
Inspectors find a number of unsafe practices at Puratos Limited, including dust leaks.
Three water companies are enforcing hosepipe bans on customers - but one is not.
Objectors say the project will increase flood risk and spoil the scenery near a stately home.
Former deputy churchwarden Benjamin Field was told by the Court of Appeal he could face a retrial.
Benjamin Field has been in prison for the murder of Peter Farquhar, 69.
The Buckingham site will be operational again from Thursday after it was shut for drainage work.
