Complex sentence: Following Abershawe's execution in 1795, Ferguson continued as a highwayman himself for five years with a successful career until his capture in 1800 by the Bow Street Runners and, tried at the Aylesbury, was publicly executed.
Split into simpler sentences: Following Abershawe's execution in 1795, Ferguson continued as a highwayman himself for five more years. In 1800 he was captured by the Bow Street Runners and, after trial at the Aylesbury, publicly executed.