British Military trench art lighter
Trench art lighter the headstamp has the letters R L for Royal Laboratory, Woolwich with the war department ( broad) arrow in between the letters,. The date numbers are 40 for 1940 and UI for Inspector's dummy. The bullet has a belted bottom, the light has not been tested and needs a flint and gas.
The bullet is 13cm L x 2cm I think it might be from a Boys anti-tank rifle