In his memoir Blair reflects upon his introduction of the act:
You idiot. You naive, foolish, irresponsible nincompoop. I quake at the imbecility of it.
It only revealed the MP expenses scandal, Prince Charles' black spider memos, restaurant hygiene ratings, ambulance delay figures, and immigration figures, as well as countless other stories in the public interest.
Who needs it?
6. Having Gordon Brown as chancellor
The pair's relationship became so strained that it's alleged Blair had little idea what Brown had planned for the country's budget in the later years.
The extent to which communications broke down in a cold war between Number 10 and the Treasury made Osborne and Cameron look like a dream team when they rolled up in 2010 - if only on the basis they weren't gouging each others eyes out.
7. Wanting to join the euro
In 2002 he told Newsnight he happily advocated joining the single currency:
I certainly believe passionately that this country and its destiny lies in Europe.
Should we stand apart from the alliance right on our doorstep as a country? It would be crazy to do that.
It is an economic union. We shouldn't, for political reasons, stand aside. I don't believe that would be a fulfilment of our national interest. I believe it would be a betrayal of our national interest.
He was talked out of it by Gordon Brown, a move proven popular in the long run especially following the financial crash.
8. 28 Days
Blair was defeated over the new terror laws, forced to accept an amendment which stipulated that the detention time limit for terror suspects without charge was 28 days - a move widely criticised by human rights activists.
It would have been 90 if he'd had his original wish - without any charge.
9. Scottish devolution
Blair led the creation of national assemblies in Edinburgh and Cardiff in 1999, something he later referred to as a mistake.
He later argued it eroded British identity and enabled the rise of nationalism in Scotland.
After he left office, Blair's consultancy has amassed business interests in some questionable places.
A 2012 letter from Blair to Kazakhstan's President Nursultan Nazarbayev advised him as to how to address a 2011 massacre which saw at least 14 unarmed protesters killed at the hands of government forces, and 64 wounded.
Blair, who was paid millions annually by the president, advised that the speech to be given at the University of Cambridge should remind the audience that:
Tragic though they were, [the deaths] should not obscure the enormous progress [in Kazakhstan].
He enclosed roughly 500 words which were then spoken by Mr Nazarbayev to portray himself as a leader improving living standards in his country.
At the time a spokesperson for Mr Blair said the former prime minister “personally receives no payment” for his consultancy’s work in Kazakhstan.
Tony Blair believes Kazakhstan is a strategically important country for the West and will continue to support it.
The letter you refer to, was simply making these points, namely that the events of Zhanaozen were indeed tragic and they had to be confronted in any speech, not ignored.