I want to know the answer to the following question:
When did the British see the need to add anti-aircraft capability?
All the background I'm provided with is that "The British recognised the need for anti-aircraft capability a few weeks before World War I broke out; on 8 July 1914, the New York Times reported that the British government had decided to 'dot the coasts of the British Isles with a series of towers, each armed with two quick-firing guns of special design,' while 'a complete circle of towers' was to be built around 'naval installations' and 'at other especially vulnerable points.'". Is that enough to answer the question?
Answer: yes