Its also interesting to note how his accent changes according to who he's speaking to.
To a certain extent everybody's does, but there was some interesting
examples of how much Blair's changes in a recent Radio 4 programme.
He can speak a fairly esturial english when suited, especially when speaking to lower class, or young people.
NB Estuary English is a name given to the form(s) of
English widely
spoken in and around London and, more generally, in the southeast of
England — along the river Thames and its estuary. Tends to be spoken by
lower class people, and as such has distinct class connotations for
other native speakers.
Jamie