Prime Minister David Cameron reads during the service of thanksgiving at St Paul's Cathedral PIC: Tim Ireland/PA Wire

Four days of celebrations for the Diamond Jubilee can be the perfect shot in the arm to revitalise the faltering UK economy, Prime Minister David Cameron said.

Events to mark Queen Elizabeth’s 60 years on the throne and the upcoming Olympic Games in London add up to a “giant advertisement” to all the world, insisted Mr Cameron.

“What’s happened this weekend is that (we have been) celebrating this great institution, Her Majesty’s service of 60 years on the throne, but also seeing some of the best of British creativity, culture, music and the rest of it all at the same time,” said PM Cameron.

“I think really it is the best of Britain. We have seen the country come together with a sense of celebration and unity but also tremendous resilience, resilience from people who want to celebrate despite the weather and resilience of course from Her Majesty - nothing stops her doing the job she does.”

Two days off work for many people should not be a blow for the economy, according to the PM.

Previously, sluggish economic performance was blamed on public holidays for events such as last year’s royal wedding of Prince William and Kate Middleton.

Other factors cited by government Ministers for dampening the recovery included the weather.

“People obviously say that bank holidays aren’t good for the economy. But I think this year we have these two extraordinary events, 60 years of Her Majesty on the throne and the Olympics,” said Mr Cameron.

“These are moments when we get the chance to show off the best of Britain and that includes the institutions, the past, the history, the pageantry that we have seen today.

“But it also includes the great universities, the music, the arts, the culture, and yes the economy and what a great place this is to start a business. I am hoping we can wrap all those things together and really make the most of this year.

“We have paid for the Olympics. We have now got to make the best of them. I think there is huge opportunity to make them a giant advertisement for our country,” he told Sky News.