Published 00:01 GMT Writing in the Tamil Guardian today, British Prime Minister David Cameron reiterated his commitment to ensuring those responsible for war crimes in Sri Lanka are held accountable and said he would press the country's new president, Maithripala Sirisena, to deliver on his commitments, during a bilateral discussion at Downing Street this afternoon. Sixteen months ago I welcomed Tamil representatives from communities here in Britain to Downing St to discuss how we could work together to address the issues of Sri Lanka’s past and put the country on the path to a brighter, peaceful and prosperous future. Since then, a UN led investigation into alleged war crimes by all sides in the conflict has got underway. And the people of Sri Lanka have elected a new President who has made clear that he is fully committed to reconciliation and reform. Ever since my visit to Sri Lanka in 2013 one thing has remained constant - my unwavering commitment to stand up for all those affected by what happened. I remain determined to ensure that there is accountability for the past and respect for human rights today. And that will be my message to President Sirisena when I meet with him in Downing Street today.