of the city's largest parks. since it opened its gates to visitors in 1847, the stream of income has been steady. i think the penguins are my favourite. the charity usually welcomes over1 million visitors a year through its gates, raising vital funds towards the care of almost 20,000 animals. after its historic closure in march, this iconic london attraction recently reopened, but months of lost income has left the oldest scientific zoo in the world struggling to survive. it's been really, really hard for us. the moment our gates closed, our income dried up. it was an incredible weight of responsibility for me and for the staff, it was a really momentous occasion. this was the first time we have closed since being back in the blitz. we had staff living on—site here, because they wanted to ensure that they could remain coming in to continue feeding our animals.