By William Schomberg
LONDON (Reuters) - Britain's economy is likely to have come within a whisker of finally recovering its pre-recession size when data is released on Tuesday, buoying Prime Minister David Cameron little more than a year before a national election.
Gross domestic product figures, due at 0830 GMT, are also likely to show Britain notched up its fastest economic growth in nearly four years in the first three months of 2014.
Britain's economy has bounced back strongly over the past 12 months and is it expected to grow more quickly than any other Group of Seven nation this year.
But it has taken longer than many other countries to shake off the effects of the financial crisis, partly because of the size of its banking sector but also, critics of the government say, because it opted for sharp curbs on public spending.
At the end of last year, the economy was 1.4 percent smaller than at its peak in the first quarter of 2008.
Gross domestic product probably expanded by 0.9 percent in the first three months of this year from the fourth quarter of 2013, when the economy grew by 0.7 percent, according to a Reuters poll of economists.
In year-on-year terms, growth is also expected to have picked up speed to hit 3.2 percent, compared with 2.7 percent in the fourth quarter.
Cameron and his finance minister George Osborne are trying to convince voters that their Conservative Party should be returned to power in the May 2015 elections to carry on restoring Britain to financial health.
The opposition Labour party has switched its line of attack away from the government's failure to revive growth to what it calls the cost of living crisis.
Britain's population has risen strongly since the financial crisis, meaning that output per head is still well below pre-crisis levels. A nearly six-year run of declining wages compared with inflation is only just starting to level out.
Nonetheless, British households are feeling increasingly upbeat about their finances.
Consumer confidence in April hit its highest level since August 2007, helped in particular by rising house prices as well as by higher earnings, according to a survey published on Tuesday by polling firm YouGov and the Centre for Economics and Business Research, a consultancy.
"Consumer confidence grew at a sluggish rate during the first quarter of 2014, but April's figures suggest that confidence is set to make great strides over the summer," Charles Davis, CEBR director, said.
Despite turnaround in Britain's economy, the Bank of England has signaled that it is in no rush to raise interest rates. Its stance has been helped by the lowest consumer inflation rate in four years.
The Bank has welcomed a long-awaited pickup in business investment as a sign that the economic recovery might be able to reduce its reliance on unsustainable consumer spending.
(Editing by Robin Pomeroy)