I would beg to differ as I would say the local loop did not exist until the first strowger exchange and improvements were made on the local loop after this.
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The first Strowger exchange (1912) : Direct dialling at lastIn 1912 the old National Telephone Company System was transferred to the Post Office. In May of that year Britain's first automatic exchange opened at Epsom in Surrey. The new exchange was based on the switching machinery developed by Almon Strowger in America.
This first British Strowger exchange had a capacity of only 500 lines but it did make it possible for connected subscribers to make their own calls, using the rotary telephone dial. By the early 1920s, the Strowger system had proved effective in Britain and several more large exchanges had been opened.
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