Durell Software is a UK software developer founded in 1983 by Robert White. Up to 1987 Durell developed about 19 games for various 8-bit computers such as Oric-1, ZX Spectrum, C64, BBC Micro, Acorn Electron and Amstrad CPC. Their biggest hit was Harrier Attack that sold about 250,000 copies.
Toward the end of 1987 they sold the rights to publish most of their existing games to Elite Systems and changed focus to software for the insurance industry. Trading under the name Durell Solutions their main products are now "Financial Adviser", "General Broker" and "Office Manager", all available as free downloads.
In 2005 Mike Richardson, author of Durell's best selling titles for the ZX Spectrum, founded Durell Games Ltd. The first game to be developed by the company is Harrier Attack II, a sequel to their best-selling 8-bit game that sold badly. After it, the company focused on insurance software.
Source: Wikipedia, "Durell Software," available under the CC-BY-SA License.