I want to know the answer to the following question:
When do culls to ensure sustainability of London's deer population occur?
All the background I'm provided with is that "While Londoners are accustomed to wildlife such as birds and foxes sharing the city, more recently urban deer have started becoming a regular feature, and whole herds of fallow and white-tailed deer come into residential areas at night to take advantage of the London's green spaces.". Is that enough to answer the question?
Answer: no