 The town expanded slightly during this time.In 1851 a new street off the High Street was opened, King Street, followed by Queens Road and Clarendon Road in the early 1860s.During this time, Watford had a population of around 6,500 The railways also continued to expand from Watford during this period; the Watford and Rickmansworth Railway opened in 1862 as a short branch line via to , and another branch was added to in 1912.