Deputy Prime Minister Nick Clegg said the economic recovery "wouldn't have happened" without the Liberal Democrats being part of the government.
Speaking to ITV News' political correspondent Carl Dinnen, the Liberal Democrat leader said: "You can't create an economic recovery without having a stable government.
"The Conservatives wouldn't have been able to do it without the Liberal Democrats, the Liberal Democrats wouldn't have been able to do it without the Conservatives."
Two thirds of British adults say that despite the economy growing they don’t feel better off, an Comres poll exclusive for ITV News has found.
While George Osborne has hailed GDP's return to pre-crisis figures as a "milestone", 69% of people interviewed said they do not feel wealthier - while one in four (24%) said they currently spend more than they earn each month.
Although only 35% of Britons said their personal finances are getting worse (the joint lowest since 2010), only 14% said they are getting better. Instead, most said they are about the same (52%).
A majority of the 2,035 Britons interviewed (55%) also agreed the improving economy is only benefitting the rich, while three in five (62%) think the gap between rich and poor has got worse over the past three months.
Prime Minister David Cameron said the GDP growth figures released today are a "major milestone" in the government's plan for the economic recovery, thanks to the "hard work of the British people", but warned "the work isn't finished yet."
Chancellor George Osborne said GDP figures on growth show that his economic recovery plan is working, but not complete and that he wanted people from all parts of the country to feel the impact of the recovery.
Speaking to Economics Editor Joel Hills from Newcastle he blamed the previous government for the three year delay in a return to growth figures, saying it takes time to work through problems caused when governments "get economic policy wrong".
Labour's shadow chancellor Ed Balls said today's GDP figures are no time for "complacent" claims that the economy is fixed, as the majority of people were not feeling the recovery due to wage stagnation, a lack of housebuilding and a lack of business investment.
At long last our economy is back to the size it was before the global banking crisis – three years after the US reached the same point.
But with GDP per head not set to recover for three more years and most people still seeing their living standards squeezed this is no time for complacent claims that the economy is fixed.
Wages after inflation are down over £1,600 a year since 2010, housebuilding under this government is at its lowest level since the 1920s and business investment is lagging behind our competitors.
Liberal Democrat leader Nick Clegg hailed the GDP growth figures as proof the "rescue" has worked.
The Chancellor George Osborne said the figures were a "major milestone".
George Osborne has said the news that the economy is now ahead of its peak before the financial crisis is "a major milestone".
Economy grew by 0.8%. Thanks to the hard work of the British people, today we reach a major milestone in our #LongTermEconomicPlan
The economy grew 0.8% in the second quarter of this year, according to the latest estimate from the Office for National Statistics.
Despite the positive news, the Chancellor tweeted that there was still a "long way to go" for the economy to fully recover from the crisis.
Economy bigger than previous peak in 2008 but long way to go-the Great Recession was one of deepest of any major economy & cost UK 6 years
He also stressed the need for the Government to stick to its economic policies and "not to repeat the mistakes of the past".
We owe it to hardworking taxpayers not to repeat the mistakes of the past &instead work through the plan that's delivering economic security
The UK economy grew by 0.8% in the last quarter, driven by growth in services and production, the ONS said.
- Output increased in two of the four main industrial services: Services grew by 1%, production grew by 0.4%, whilst construction and agriculture were both down slightly, by 0.5% and 0.2% respectively.
Britain's gross domestic product has grown 0.8% in the second quarter of the year, following the first quarter growth of 0.6%.
The economy is now 0.2% ahead of its pre-crisis peak in early 2008, the ONS said.