No. 3 “Milford” was built by Sharp, Stewart & Co. in 1859 for the Cambrian Railways with the works number 1123. It was actually the second locomotive of this railway since No. 2 “Ruthin” was only delivered by Manning, Wardle & Co. in 1860. It was a saddle tank locomotive with two coupled axles in the front and a single trailing axle. Its main task was local passenger traffic for what it had drivers of four feet and nine inches or 1,448 mm. But in its first years of service, it was also used in the construction of the Cambrian Railway network. It was scrapped in 1895, what was much later as the other early Cambrian Railways locomotives.