Spokesman for Task Force Helmand, Lieutenant Colonel Hywel Lewis MBE, said:
A fantastic soldier has tragically died defending his comrades. He was the brightest and the best. Those who served alongside him were privileged and feel his loss most deeply. Our prayers and thoughts are with his family at this extremely difficult time.
The serviceman’s next of kin have been informed.
More top news
Thames Valley Police named the victims as Savaan Mundae, Jaspal Bahra, Thanh Nguyen and Captain Michael Green.
Mild & wet with winds whipping up
The Chancellor said he will use the Budget to "invest to secure a bright future", in a signal he is ready to usher in the end of austerity.