The spokesperson added the prime minister would "make clear that we urgently need to see progress on the political track... to end the conflict and humanitarian suffering in Yemen".
Yemen has been torn apart since March 2015 when Saudi Arabia and its allies launched the war on the country to reinstall its former Riyadh-allied government.
The Saudi foreign minister, Adel Al Jubeir, has responded to the massive protests, claiming they are based on a "misunderstanding" of his country's military aggression against Yemen, the poorest Arab country.
Only 6 per cent support United Kingdom arms sales to Saudi Arabia; May: "Tell Saudi Prince - stop the slaughter, start peace talks!" were the choice slogans emblazoned on the side of a white van next to the protest, Efe news reported.
The UK has, so far, sold more than six billion pounds of arms to Saudi Arabia. We appreciate Saudi Arabia hosting millions from all countries including Egypt and providing job opportunities for them. Britain is looking for trading partners at a time when it comes out of the European Union and Saudi Arabia has to convince skeptical investors about the success of its internal reforms. The British government seeks to turn its historic defense relations into trade and investment, focusing both on the expanding Saudi Arabian export market in the services sector and on attracting Saudi money to finance domestic projects.
The potential listing of Saudi energy giant Aramco on the London stock exchange next year is also likely to feature in talks.
Still-Unidentified Lottery Winner Gets Her Dough … But Will She Stay Anonymous?
Four local nonprofits are the beneficiaries of almost $250,000 thanks to the victor of the recent New Hampshire Powerball Lottery. The judge ruled the woman could receive the money before he decides whether she can keep her identity from being revealed.
Arsene Wenger in focus
Ozil has been directly involved in 100 goals in 189 appearances for Arsenal - 37 goals and 63 assists. The Italians had gone 10 games without losing between these defeats.
Qualcomm Drama Delayed Amid National Security Review
Mr Cornyn said on Monday he was glad CFIUS chose to review the deal, noting aggression by " rivals, like China". The US government, including the Department of Defense, also source sensitive technologies from Qualcomm .
The project, which is worth 500 billion US dollars, is adjacent to the Red Sea and the Gulf of Aqaba and near maritime trade routes that use the Suez Canal.
"Behind the smiles and handshakes on show tomorrow, and despite Prince Mohammed bin Salman's attempts to be a poster boy for progress, there are some uncomfortable truths about his repressive government that must not be forgotten", she wrote in an editorial for The Independent.
"The doubling of executions under the new Crown Prince reveals that, beneath his glossy public image, Mohammed bin Salman is one of the most brutal leaders in the Kingdom's recent history", director, Maya Foa, said.
However, anti-war activists and human rights campaigners have designed buses and vans touring London over the past two days with banners accusing bin Salman of war crimes.
The UK shouldn't be blinded by the charm offensive surrounding Prince Mohammed, the opposition Labour Party's foreign affairs spokeswoman, Emily Thornberry, said Wednesday in a Bloomberg TV interview.