CWC (Cabot Watch Company) is a British company established in 1972 and was contracted to supply watches to the Ministry of Defence.
This watch was produced in the 1990’s. It is the GS model (General Service). It is a modern version of the mechanical hand-wound model issued to the British troops in the 1970’s up to the 1980’s when the quartz movement arrived (G10).
This model is still available today from CWC. The current model (at the time of writing) has a similar design, and is also powered by the Swiss made ETA 2824-2 movement. However it uses Luminova instead of Tritium as the luminescent compound for the dial and hands. This is identified by the letter L or T on the dial under the CWC logo.
This watch arrived in need of a bit of TLC, and looked like it had a pretty hard life. That is what military watches are designed for!