From the 1880 onwards there was a growing concern within the British Government and in influential business circles to ensure that the trade hub around the world was secure in the event of war. This included a systematic development of defended harbour, both at home and abroad. This was in addition to the chain of defended coaling stations which were often at important commercial harbours. By 1905 the situation had been rationalised and the list of defended home ports can be seen here. The list below outlines the overseas ports that were deemed as requiring coastal defences in 1900.