| Company | Timeline | Status | |
| The Doncaster 1909 Aeroplane Company Limited Director • Retired | 8 Mar 1999←15 Years→9 Mar 2014 | Active | |
Harry Speddings (Farms) Limited Director • Farmer | 31 Mar 1992←26 Years→10 Apr 2018 | Dissolved | |
Harry Speddings (Farms) Limited Secretary • Unreported | 31 Mar 1992←26 Years→10 Apr 2018 | Dissolved | |
