UKIP leader Nigel Farage said his party is continuing to campaign and is doing so in the 'spirit' of Margaret Thatcher.
He said: "If I think about the abiding memory of Margaret Thatcher it is indeed after the Brighton bomb.
"People had been killed, people were still in intensive care, but she insisted that not only did the conference continue, but she was going to be there on the platform at 9am the next morning. I think in that spirit we should continue campaigning."
UKIP leader Nigel Farage has signed a book of condolence for Baroness Thatcher in her hometown Grantham and said the former Prime Minister had "fundamentally changed my life."
A book of condolence for Baroness Thatcher has opened at Finchley Conservatives Club, where the former Prime Minister served as MP.
Organisers of the book say there is a steady stream of people arriving to leave messages.
The Queen will honour Baroness Thatcher, her longest serving prime minister, and attend the funeral of the woman who changed the face of modern British politics.
Political Correspondent Libby Wiener reports:
The Cambridgeshire based charity Alzheimer's Research UK have paid tribute to Margaret Thatcher.
Lady Thatcher became patron of the dementia research charity in 2001. Her daughter Carol revealed that her mother had been diagnosed with dementia in 2008.
Rebecca Wood, Chief Executive of Alzheimer’s Research UK, said:
“The loss of Baroness Thatcher will resonate across the world, but in particular with the 820,000 people living with dementia in the UK."
"That dementia could affect such a forceful personality is a lesson that this cruel condition does not discriminate. As Patron to Alzheimer’s Research UK, her support of our research could not have been more important, helping draw attention to a condition so frequently swept under the carpet."
“Thanks to Lady Thatcher, we have made inroads with our research to defeat dementia. The answers will come too late for her, but they will come, and this will be another important part of our collective memory of her life and work.”
Almost 30 years after the miners' strike, the legacy of bitterness remains. The NUM National Secretary Chris Kitchen says he is not sorry to hear of Margaret Thatcher's death.
The funeral of Baroness Thatcher should be in accordance with what her family wants, Cabinet Office minister Francis Maude has said.
The family have been involved over a long period.
We’ve been concerned throughout that they should be involved and that the arrangements that are made – which obviously involve huge numbers of people and a wide range of organisations - should be in accordance with what the family themselves want.
Although people all around the world and particularly those who knew her well are feeling a loss today, the people who feel the greatest loss are clearly their family.
The Queen personally decided to attend Lady Thatcher's funeral. This will be the first funeral of a Prime Minister she will attend since Winston Churchill's.