The Bank of England is to paint a gloomier view of the UK's recovery in its first assessment on prospects since the return to recession.
Governor Sir Mervyn King is expected to indicate growth of around 0.75% in 2012, compared with the 1.2% predicted three months ago and 2.2% a year ago.
And while inflation has not fallen as expected, with the consumer price index rising in March to 3.5%, the Bank will stick by earlier expectations that the figure will fall to the 2% target by the end of this year.
The Bank stopped short of increasing its quantitative easing programme last week despite a 0.2% decline in the first three months of the year, meaning the UK is in a technical recession,
Sir Mervyn is already braced for a choppy year, with events such as Olympics and an additional bank holiday granted for the Queen's Diamond Jubilee expected to see growth "zig zag" throughout 2012.
But while economists expect the Bank to cut growth estimates for 2012, they predict the downward revision to figures for 2013 will not be much lower than 2.8% in its last report.
Alan Clarke, UK and eurozone economist at Scotiabank, believes the Bank will forecast growth of around 0.75% in 2012.
He said: "The economy hasn't grown for six months, and the headline second quarter GDP data are unlikely to stray much above zero, even if the underlying picture is more robust."
In its last report, the Bank forecast GDP growth of around 1.2% this year and around 2.8% in 2013, while inflation will hit its 2% target in the final quarter of 2012 and fall to as low as 1.5% the following year.
The Bank has previously questioned the ONS figures, calling a drop in construction output "perplexing" and adding that underlying growth in the UK appeared to be strong.