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Apichart Weerawong, Associated Press
British Foreign Secretary William Hague, front left, is greeted upon his arrival at Naypyitaw International Airport by Myanmar officials Thursday, Jan. 5, 2012 in Naypyitaw, Myanmar. Hague began a two-day visit to Myanmar Thursday.

YANGON, Myanmar — Britain's foreign secretary urged Myanmar to push its democratic reforms and release all political prisoners as he began a historic trip Thursday to a country that has recently emerged from a pariah status in the West.

William Hague is the first British foreign secretary to visit Myanmar since 1955, and follows in the footsteps of U.S. Secretary of State Hillary Rodham Clinton, who came in November.

Myanmar President Thein Sein greeted Hague in the capital, Naypyitaw, but neither talked to reporters before their meeting. Hague is scheduled to later meet with opposition leader and Nobel peace laureate Aung San Suu Kyi in the main city of Yangon.

In a statement issued before leaving London, Hague said his trip was intended to encourage the "government to continue on its path of reform, and to gauge what more Britain can do to support that process."

Western nations have offered cautious support for reforms that have led to the military junta that had ruled since 1962 taking a back seat and allowing a nominally civilian government to take power in March after winning elections that were boycotted by Suu Kyi's party.

But since then, her National League for Democracy party has joined the political process and said it will take part in upcoming by-elections. Also, the government has released some political prisoners.

Britain believes there are between 591 and 1,700 political prisoners held by Myanmar authorities, though poor record keeping and disputes over the status of captives mean an accurate figure is difficult to gauge.

"We hope to see the release of all remaining political prisoners, free and fair by-elections, humanitarian access to people in conflict areas and credible steps towards national reconciliation," Hague said.

Though Hague's two-day visit signals a shift in relations, Britain won't promise any immediate change in European Union sanctions on arms sales, asset freezes and travel bans — or change a policy that discourages U.K. businesses from trade with Myanmar.

Britain recently pledged 185 million pounds ($289 million) over three years to fund health and education projects — becoming Myanmar's largest bilateral aid donor — but the U.K. channels funds only through nongovernmental groups.

Hague will lay out a series of demands for Myanmar's leadership to meet before Britain considers offering funds direct to the government, or before the EU can lift any sanctions.

"Further steps are needed that will have a lasting impact on human rights and political freedom," Hague said.