The European Parliament has reportedly voted to impose an arms embargo on Saudi Arabia.
The move is said to be in response to Saudi Arabia's violations of human rights and possible war crimes during aerial and ground attacks in Yemen.
According to Amnesty International, the UK, France, Germany, Italy, Montenegro, the Netherlands, Spain, Sweden, Switzerland, Turkey and the US have traded £18bn worth of arms to Saudi Arabia in 2015.
The report suggests the UK have issued 152 licences for exports of military equipment to Saudi Arabia, totalling £2.94bn.
The human rights watchdog has called for discussions on the implementation of the arms trade treaty (ATT) in Geneva.
Amnesty International report read: "All the arms-exporting countries identified in the report have signed up to the ATT, which has the aim of reducing human suffering through new global rules for the arms trade, which forbid arms transfers that would be used for war crimes or risk being used for serious violations of international law."
A Saudi-led coalition has been launching airstrikes in Yemen to weaken the Houthi rebels, who currently control the nation's capital Sana'a, and also dissolved the parliament earlier this year.
According to the UN, at least 364 civilians have been killed with more than 681 injured since the start of airstrikes.
Dozens of public buildings, including hospitals, schools, airports and mosques, are claimed to have been destroyed by shelling and other attacks.