| 1901 |
Victoria dies & Edward VII ascends throne. |
| 1912 |
Titanic sinks.
Greenwood family take over the pencil factory as payment for a bad debt. |
| 1914 |
First World War starts. |
| 1916 |
Name of the company is changed to Cumberland Pencil Co. |
| 1918 |
First World War ends. |
| 1920 |
Company taken over by British Pens Ltd & start building the current factory. |
| 1926 |
Logie Baird gives the first demonstration of television. |
| 1930 |
Development of Lakeland. |
| 1936 |
Edward VIII abdicates. |
| 1938 |
Development of first 24 Derwent coloured pencils Series 19. |
| 1939-1945 |
Second World War. |