With the proliferation of unmanned aerial vehicles there is an obvious demand for a system that can shoot them down without using quarter of a million pound missiles.
Recognising this, Thales have developed the RAPIDFire, using the 40mm CTA cannon that will arm the FRES Scout and Warrior.
Of course, I would prefer to see a demountable system that can use any suitable truck, be moved between them should the vehicle be unserviceable and also used in the C-RAM role in a fixed location.
And why not mounted on a ship?
But that is being greedy!