On 11 June 2004, Thatcher (against doctor's orders) attended the state funeral service for Ronald Reagan.
She delivered her eulogy via videotape; in view of her health, the message had been pre-recorded several months earlier.
Thatcher flew to California with the Reagan entourage, and attended the memorial service and interment ceremony for the president at the Ronald Reagan Presidential Library.

In 2005, Thatcher criticised the way the decision to invade Iraq had been made two years previously.
Although she still supported the intervention to topple Saddam Hussein, she said that (as a scientist) she would always look for "facts, evidence and proof", before committing the armed forces.
She celebrated her 80th birthday on 13 October at the Mandarin Oriental Hotel in Hyde Park, London; guests included the Queen, the Duke of Edinburgh, Princess Alexandra and Tony Blair.
Lord (Geoffrey) Howe of Aberavon was also in attendance and said of Thatcher: "Her real triumph was to have transformed not just one party but two, so that when Labour did eventually return, the great bulk of Thatcherism was accepted as irreversible."

In 2006, Thatcher attended the official Washington, D.C. memorial service to commemorate the fifth anniversary of the 11 September attacks on the US.
She was a guest of Vice-President Dick Cheney, and met Secretary of State Condoleezza Rice during her visit.
In February 2007 Thatcher became the first living British prime minister to be honoured with a statue in the Houses of Parliament.
The bronze statue stands opposite that of her political hero, Sir Winston Churchill, and was unveiled on 21 February 2007 with Thatcher in attendance; she remarked in the Members' Lobby of the Commons: "I might have preferred iron – but bronze will do ... It won't rust."

Thatcher was a public supporter of the Prague Declaration on European Conscience and Communism and the resulting Prague Process, and sent a public letter of support to its preceding conference.

After collapsing at a House of Lords dinner, Thatcher, suffering low blood pressure, was admitted to St Thomas' Hospital in central London on 7 March 2008 for tests.
In 2009 she was hospitalised again when she fell and broke her arm.
Thatcher returned to 10 Downing Street in late November 2009 for the unveiling of an official portrait by artist Richard Stone, an unusual honour for a living former prime minister.
Stone was previously commissioned to paint portraits of the Queen and Queen Mother.

On 4 July 2011, Thatcher was to attend a ceremony for the unveiling of a 10 ft (3.0 m) statue to Ronald Reagan, outside the US Embassy in London, but was unable to attend due to her frail health.
She last attended a sitting of the House of Lords on 19 July 2010, and on 30 July 2011 it was announced that her office in the Lords had been closed.
Earlier that month, Thatcher was named the most competent prime minister of the past 30 years in an Ipsos MORI poll.

Thatcher's daughter Carol first revealed that her mother had dementia in 2005, saying "Mum doesn't read much any more because of her memory loss".
In her 2008 memoir, Carol wrote that her mother "could hardly remember the beginning of a sentence by the time she got to the end".
She later recounted how she was first struck by her mother's dementia when, in conversation, Thatcher confused the Falklands and Yugoslav conflicts; she recalled the pain of needing to tell her mother repeatedly that her husband Denis was dead.
On 11 June 2004, Thatcher (against doctor's orders) attended the state funeral service for Ronald Reagan. She delivered her eulogy via videotape; in view of her health, the message had been pre-recorded several months earlier. Thatcher flew to California with the Reagan entourage, and attended the memorial service and interment ceremony for the president at the Ronald Reagan Presidential Library.
In 2005, Thatcher criticised the way the decision to invade Iraq had been made two years previously. Although she still supported the intervention to topple Saddam Hussein, she said that (as a scientist) she would always look for "facts, evidence and proof", before committing the armed forces. She celebrated her 80th birthday on 13 October at the Mandarin Oriental Hotel in Hyde Park, London; guests included the Queen, the Duke of Edinburgh, Princess Alexandra and Tony Blair. Lord (Geoffrey) Howe of Aberavon was also in attendance and said of Thatcher: "Her real triumph was to have transformed not just one party but two, so that when Labour did eventually return, the great bulk of Thatcherism was accepted as irreversible."
In 2006, Thatcher attended the official Washington, D.C. memorial service to commemorate the fifth anniversary of the 11 September attacks on the US. She was a guest of Vice-President Dick Cheney, and met Secretary of State Condoleezza Rice during her visit. In February 2007 Thatcher became the first living British prime minister to be honoured with a statue in the Houses of Parliament. The bronze statue stands opposite that of her political hero, Sir Winston Churchill, and was unveiled on 21 February 2007 with Thatcher in attendance; she remarked in the Members' Lobby of the Commons: "I might have preferred iron – but bronze will do ... It won't rust."
Thatcher was a public supporter of the Prague Declaration on European Conscience and Communism and the resulting Prague Process, and sent a public letter of support to its preceding conference.
After collapsing at a House of Lords dinner, Thatcher, suffering low blood pressure, was admitted to St Thomas' Hospital in central London on 7 March 2008 for tests. In 2009 she was hospitalised again when she fell and broke her arm. Thatcher returned to 10 Downing Street in late November 2009 for the unveiling of an official portrait by artist Richard Stone, an unusual honour for a living former prime minister. Stone was previously commissioned to paint portraits of the Queen and Queen Mother.
On 4 July 2011, Thatcher was to attend a ceremony for the unveiling of a 10 ft (3.0 m) statue to Ronald Reagan, outside the US Embassy in London, but was unable to attend due to her frail health. She last attended a sitting of the House of Lords on 19 July 2010, and on 30 July 2011 it was announced that her office in the Lords had been closed. Earlier that month, Thatcher was named the most competent prime minister of the past 30 years in an Ipsos MORI poll.
Thatcher's daughter Carol first revealed that her mother had dementia in 2005, saying "Mum doesn't read much any more because of her memory loss". In her 2008 memoir, Carol wrote that her mother "could hardly remember the beginning of a sentence by the time she got to the end". She later recounted how she was first struck by her mother's dementia when, in conversation, Thatcher confused the Falklands and Yugoslav conflicts; she recalled the pain of needing to tell her mother repeatedly that her husband Denis was dead.
Margaret Thatcher