The Prime Minister is giving a joint press conference with Aung San Suu Kyi. He said:
There is the real prospect of change [in Burma]...We must always be sceptical and questioning because we want to know that those changes are irreversible.
He also called on the Burmese Government to release more political prisoners.
The Prime Minister has said that the UK will "suspend, but not lift" sanctions on Burma. He is speaking at a joint press conference with the Burmese opposition leader Aung San Suu Kyi in Rangoon.
David Cameron has arrived in Rangoon where he is meeting democracy activist Aung Sang Suu Kyi.
He has completed talks with Burmese President Thien Sein including on the release political prisoners.
A Downing Street spokesman said Mr Cameron is "cautiously optimistic for the future" and believes President Thein Sein is "sincere in what has happened so far" in terms of political reforms.
- Burma was a British colony between 1886 and 1948
- The military government changed the name from Burma to Myanmar in 1989. Many countries, including the UK, do not recognise the change.
- Its 2010 election was widely seen as unfair but brought in a nominally civilian government under President Thein sein.
- It is one of the poorest countries in Asia
- Reporters Without Borders ranked Burma among the 10 worst countries for press freedom
ITV News Senior Political Correspondent Chris Ship reports from the presidential palace in Naypyidaw where David Cameron is holding talks with Burmese President Thien Sein:
The Prime Minister's convoy was sprayed with water en route to the Burmese capital Naypyidaw to mark the Thingyan water festival. President Thien Sein greeted Mr Cameron at the palace and said through a translator:
This visit of your excellency is significant and historical in our bilateral relations. We are very encouraged and we are most appreciative of your kind acknowledgement towards Myanmar [Burma].
David Cameron's historic visit to Burma coincides with the country's water festival, described by the British Ambassador to Burma Andy Heyn as a week of "collective madness where people across the country come together to soak each other with water at every possible opportunity".
Following his arrival in Burma, David Cameron warned that reforms in the country could be rolled back:
We should be under no illusions about what a long way there is to go and how much more the [Burmese] government has to do to show this reform is real and it is irreversible. We should be very cautious and very sceptical about that. We need to see progress on political reform. We need to see prisoners freed and changes that show the reform is irreversible.