Statement from the BBC:
We regret to inform you that due to operational issues beyond our control, we have had to cancel the Human Planet Live tour that was scheduled to take place in March and April 2012.
We will be refunding all bookings in full. Refunds will be processed automatically to the relevant credit/debit card and no further action is required from you.
We hope to bring this show to you at a later date. Please accept our sincere apologies for any disappointment or inconvenience this cancellation may cause you.