Between 1904 and 1907 the Barry Railway planned an extension railway to by-pass the Rhymney Railway section, and to reach Newport over the B&M Railway, and this was authorised by Act of 28 August 1907. However, there were considerable limitations, particularly on rate competition, and the Barry Railway saw that this expensive line would not be profitable, and it delayed construction, hoping to negotiate better terms with its competitors. The delay continued right up until 1914, when the outbreak of World War I prevented the realisation of major new schemes.