David Cameron yesterday called on the public to pressurise Tony Blair into disclosing his secret letters to George Bush from 2002 promising to go to war in Iraq. Downing Street insisted the former prime minister should drop his demands for secrecy when he testifies at the Iraq Inquiry tomorrow. Mr Cameron intervened after Cabinet Secretary Sir Gus ODonnell refused to declassify the letters, written in the run-up to the 2003 invasion, after talks with Mr Blair He demanded 'transparency and told MPs: 'Anyone unhappy with the conclusions is able to write to Tony Blair to make their views known. 'For my own part, I hope this inquiry can be as open and clear as possible. Pressure for publication grew yesterday when evidence emerged showing Mr Blairs then private secretary, Matthew Rycroft, prepared two differing accounts of conversations between Mr Blair and Mr Bush to conceal contents of the letters from Whitehall officials. Mr Rycroft said Mr Blair claimed the letters were part of a 'personal dialogue, rather than an official record. He also explained that Mr Blair was clear 'the UK would be with the U.S. in any military action against Iraq. In a further blow to Mr Blairs credibility, the Chilcot Committee released documents which raised more questions about the build-up to war. Former Joint Intelligence Committee chairman Sir John Scarlett admitted his team were 'bulldozed into drawing conclusions about Saddam Husseins weapons of mass destruction 'by the military time-table which created a rush to war. And former chief spin-doctor John Williams admitted the Foreign Office was frozen out of the decision to go to war in part because officials were kept in the dark about 'exchanges between No 10 and the White House. Inquiry chairman Sir John Chilcot yesterday expressed his frustration that Sir Gus ODonnell had refused to clear even limited extracts from Mr Blairs letters for publication. (The Mail)