Leaders from the three main political parties have paid warm tribute to the Queen.

The monarch is set to visit Westminster Hall on Tuesday, April 30 to receive "humble addresses" from both houses of parliament in the year of her Golden Jubilee.

Beginning the tributes, Tony Blair told MPs that "typically, Her Majesty has said the Golden Jubilee is an occasion for her to acknowledge with gratitude the loyalty and support they have received from so many people since her accession".

"It also provides us, the people of this country and those in the Commonwealth the opportunity to celebrate the 50 years of absolutely dedicated service by Her Majesty and Prince Philip."

Honouring the Queen Mother, the prime minister said that millions had paid tribute to "someone who had inspired us for over a century".

"We saw the respect and loyalty the monarchy retains in the heart of our nation," he said.

Revering the Queen's long and distinguished record of public service, the prime minister credited the monarch with an "outstanding range of duties", the patronage of over 600 organisations, meeting more of her subjects than any of her forebears and conducting 251 official visits to 129 countries.

"Throughout all her work she has been guided by deep seated values," he said, highlighting the Queen's Christmas 1999 address singling out "fairness and compassion, justice and tolerance" as guiding principles in the years ahead.

As the 10th prime minister to serve the Queen, Blair finished by praising her contribution to affairs of state.

"In the many meetings I have had with Her Majesty since 1997 I have time and again had reason to be grateful to her for her wisdom, good sense and experience which she always brings to the issues of the day."

Echoing the prime minister the leader of the opposition, Iain Duncan Smith, commended the integrity of the Queen's 50 year reign.

"Perhaps a real lesson in constancy and dedication for all of us of the next generation," he said.

The Conservative leader went on to extol "a model constitutional monarch".

"During 50 years in which Britain has changed so completely the Queen has symbolised the strength, stability and unity of this United Kingdom. And the superiority of evolution over revolution in our national life," he said.

"The Queen has been in every sense a model constitutional monarch. Our democracy owes much to her instinctive understanding of her role and her deep love of her country."

To, mainly Tory cheers, Duncan Smith took on the "critics and closet republicans" who had forecast that there would be "no public interest in the Jubilee and that it would be a flop."

"I happily predict today they will be utterly confounded by the outpouring of loyalty and affection from people throughout the United Kingdom for the monarchy," he said.

"We look forward to many, many more years of her reign."

Liberal Democrat leader Charles Kennedy honoured the Queen's "hallmark" devotion to both national and international affairs.

"All of us in the House, in all parties, will know politicians in other countries outside our own borders and boundaries, Commonwealth politicians in particular, who will attest to the extraordinarily well-informed breadth and depth of knowledge and commitment over these past last 50 years which has been the hallmark of Her Majesty's approach," he said.