According to Myanmar.net,
the invitation was forwarded by the Ambassador of UK to Thein Sein during their recent meeting with the Donor Support Group.
Prime Minister Cameron is the first Western leader to visit Burma after the relaxation of military rule and eventual holding of parliamentary elections where pro democracy leader Aung San Suu Kyi later participated and eventually got elected as member of parliament.
Suu Kyi has a fairly good rapport with President Thein Sein, saying "he is a man she trusts in negotiations.'
According to BBC
, Cameron has "championed the suspension of international sanctions against Burma arguing that new President Thein Sein is genuinely committed to reform."
BBC foreign correspondent Fergal Keane said "The government is keen to recognise his courage in pushing ahead with political liberalisation, reducing censorship and - just this week - promising a fairer economic deal for all Burmese.
"But it is also keen to see renewed negotiations between the president and Aung San Suu Kyi at a time when an upsurge in ethnic violence has reminded all sides of the danger of political instability."
This would be the first visit by a Burmese head of state to the country's former colonial ruler in half a century” Keane added.
President Thein Sein is a former general
who once held key positions in the former military junta that ruled Myanmar for many years. He was the country's Prime Minister from 2007 to 2011 under military rule and became President in March 2011 under the new dispensation
Thein Sein has earned praises from heads of western nations for his actions to set free thousands of political prisoners and his efforts in leading the country towards the path of democracy.