The president is expected to use this week's visit to encourage British companies to invest in Liberia.
Over the three days, she is to hold talks with International Development Minister Hilary Benn, leader of the House of Lords Valerie Amos and Minister for Africa Lord Triesman.
Among other engagements, she is due to speak at the International Institute for Strategic Studies in London.
Monrovia - Liberian President Ellen Johnson Sirleaf began a three-day trip to Britain on Monday, where she is due to meet Queen Elizabeth II as well as a handful of ministers.
Africa's first elected female president is not scheduled to meet British Prime Minister Tony Blair, who is holidaying in Italy.
A foreign office spokesman confirmed that Sirleaf arrived on Monday morning on her first official visit to Britain since being voted into office in January. The president is expected to use this week's visit to encourage British companies to invest in Liberia.
Over the three days, she is to hold talks with International Development Minister Hilary Benn, leader of the House of Lords Valerie Amos and Minister for Africa Lord Triesman.
Among other engagements, she is due to speak at the International Institute for Strategic Studies in London.
Earlier this month, Sirleaf flew to the United States for four days. -AFP