Janus (Greek mythology: Janus) GWR Standard Goods 0-6-0(1854 - 1880) Jason (Greek mythology: Jason) GWR Premier class 0-6-0 (1847 - 1870) Javelin GWR Sun class 2-2-2 (1841 - 1870) Jay (Bird: Jay) SDR Raven class 0-4-0ST (1875 - 1892) John Gray GWR Hawthorn class 2-4-0 (1865 - 1876) Juno (Roman mythology Juno) GWR Banking class 0-6-0ST (1852 - 1872) SDR Dido class 0-6-0ST (1864 - 1884) Jupiter (Roman mythology: Jupiter) GWR Fire Fly class 2-2-2 (1841 - 1867) Juvenal (Roman personality: Juvenal) GWR Bogie class 4-4-0ST (1854 - 1873) K Kaiser (Leader of people: Kaiser) GWR Metropolitan class 2-4-0T (1862 - 1872) Kertch (British battle: Kertch) GWR Iron Duke class 4-2-2 (1855 0 1872) Khan (Leader of people: Khan) GWR Metropolitan class 2-4-0T (1862 - 1872) King SDR 2-4-0T (1871 - 1878) L Lagoon GWR Standard Goods 0-6-0 (1861 - 1876) Lalla Rookh (Literary: Lalla-Rookh) GWR Waverley class 4-4-0 (1855 - 1872) Lance (Speed: Lance) GWR Sun class 2-2-2 (1841 - 1870) SDR Comet class 4-4-0ST (1851 - 1873) SDR Leopard class 4-4-0ST (1875 - 1892) Lark (Bird: Lark) SDR Raven class 0-4-0ST (1874 - 1892) Laurel (Tree: Bay Laurel) GWR Metropolitan class 2-4-0T (1864 - 1872) Leander (Greek mythology: Hero and Leander) GWR Standard Goods 0-6-0 (1852 - 1875) Leo (Zodiac: Leo) GWR Leo class 2-4-0 (1841 - 1870) Leonidas (Classical ruler: Leonidas I) GWR Standard Goods 0-6-0 (1863 - 1881) Leopard (Fast animal: Leopard) GWR Fire Fly class 2-2-2 (1840 - 1878) SDR Leopard class 4-4-0ST (1872 - 1893) Leopold (Famous personality: Leopold I of Belgium) GWR Victoria class 2-4-0 (1856 - 1877) Lethe (Greek mythology: Lethe) GWR Fire Fly class 2-2-2 (1842 - 1878) Libra (Zodiac: Libra) GWR Leo class 2-4-0 (1841 - 1871) Liffey (Geography: River Liffey) GWR Standard Goods 0-6-0 (1855 - 1872) Lightning (Speed: Lightning) GWR Iron Duke class 4-2-2 (1847 - 1878) GWR Rover class 4-2-2 (1878 - 1892) Lily (Flower: Lily) GWR Metropolitan class 2-4-0T (1864 - 1872) Lion (Powerful animal: Lion) GWR Sharp, Roberts 2-2-2 (1838 - 1847) SDR Eagle class 4-4-0ST (1859 - 1883) Load Star GWR Star class 2-2-2 (1841 - 1870) Locke (Famous engineer: Joseph Locke) GWR Victoria class 2-4-0 (1863 - 1881) Locust (Insect: Locust) GWR Metropolitan class 2-4-0T (1862 - 1876) London (Geography: London) GWR Swindon class 0-6-0 (1865 - 1873) Lord of the Isles (Leader of people: Lord of the Isles) GWR Iron Duke class