This barely corresponds to British Prime Minister David Cameron's claims that UK forces would play a "vital, battle-winning" role in the conflict.
In his 2015 speech to MPs justifying British action in Syria, Cameron said: "We have the assets to do that, and we can significantly extend the capabilities of the international Coalition forces."
During that speech, Cameron specifically named the Brimstone missile system as a key strategic reason for the UK to extend its campaign into Syria. However, literally no strike has been conducted using this weapon.
The official position of United Kingdom is that it sees Syria and Iraq as one single theater of war.
According to a Ministry of Defense spokesperson, "[MoD] makes no apology that our focus has been helping recapture key Iraqi cities such as Ramadi and Hit. Iraq and Syria are one battlefield in this fight and our planes will operate wherever they can be best used."
The need to extend airstrikes in Syria is heavily debated in British Parliament and the opposition Labour Party whom Cameron allegedly called "bunch of terrorist sympathizers" who will most likely use the drop-off in airstrikes to their advantage.