According to the UK Ministry of Defence (MOD), the successful trial comes as drone swarms are increasingly seen in use in frontline combat in Ukraine.
UK Defence Intelligence estimates that last year, Ukraine had to defend against attacks from more than 18,000 drones.
Frying 100 drones
In this test, the British Army successfully killed two swarms of drones in a single engagement.
The project saw more than 100 drones being tracked, engaged, and defeated using the weapon across all trials.
Team Hersa, a collaboration between Defence Equipment & Support and the Defence Science and Technology Laboratory, has delivered the project.
The RFDEW demonstrator has been developed by an industry consortium led by Thales UK.