RMGA0ART–Britain's Prince Charles, the Prince of Wales, speaks with members of the public outside Belleek Pottery in Belleek, Co Fermanagh.

Der britische Thronfolger Prinz Charles spricht am Mittwoch, 29. April 2009, in Berlin beim Verlassen der britischen Botschaft mit Schuelern der Grundschule am Brandenburger Tor. (AP Photo/Franka Bruns) --- The Prince of Wales, Britain's Prince Charles speaks to pupils as he leaves the British Embassy in Berlin, Germany, Wednesday, April 29, 2009. (AP Photo/Franka Bruns)

RM2P8HFHN–Der britische Thronfolger Prinz Charles spricht am Mittwoch, 29. April 2009, in Berlin beim Verlassen der britischen Botschaft mit Schuelern der Grundschule am Brandenburger Tor. (AP Photo/Franka Bruns) --- The Prince of Wales, Britain's Prince Charles speaks to pupils as he leaves the British Embassy in Berlin, Germany, Wednesday, April 29, 2009. (AP Photo/Franka Bruns)

Britain's Prince of Wales speaks at the Royal College of Physicians. In a keynote speech the Prince warned of the health problems caused by the 'cavalier attitude' to the state of Britain's buildings, cities and towns, he expressed his concern at the rise in people's suffering from allergies in the UK and the emergence of 'sick building syndrome' as he spoke to delegates on the healing environment.

RMG7T323–Britain's Prince of Wales speaks at the Royal College of Physicians. In a keynote speech the Prince warned of the health problems caused by the 'cavalier attitude' to the state of Britain's buildings, cities and towns, he expressed his concern at the rise in people's suffering from allergies in the UK and the emergence of 'sick building syndrome' as he spoke to delegates on the healing environment.

Britain's Prince Charles, sitting left, speaks to young people who have participated in the Prince's Trust courses during a function for the Trust, in Auckland, Wednesday, March 9, 2005. Prince Charles is on a six day visit to New Zealand. (AP Photo/William West, Pool)

RM2PEB620–Britain's Prince Charles, sitting left, speaks to young people who have participated in the Prince's Trust courses during a function for the Trust, in Auckland, Wednesday, March 9, 2005. Prince Charles is on a six day visit to New Zealand. (AP Photo/William West, Pool)

RMGC4CP5–Britain's Prince Charles speaks at a state dinner held in Ottawa last night in honour of the heir to the throne and his wife.

French President Emmanuel Macron (R) speaks at a wreath-laying event at Carlton Gardens in central London on June 18, 2020 with Britain's Prince Charles, Prince of Wales (2L) and Britain's Camilla, Duchess of Cornwall (L) during a visit to mark the anniversary of French president Charles de Gaulle's appeal to French people to resist the Nazi occupation during WWII. - Macron visited London on June 18 to commemorate the 80th anniversary of former French president Charles de Gaulle's appeal to French people to resist the Nazi occupation during World War II. Photo by Tolga AKMEN/Pool/ABACAPRESS.CO

RM2DFB236–French President Emmanuel Macron (R) speaks at a wreath-laying event at Carlton Gardens in central London on June 18, 2020 with Britain's Prince Charles, Prince of Wales (2L) and Britain's Camilla, Duchess of Cornwall (L) during a visit to mark the anniversary of French president Charles de Gaulle's appeal to French people to resist the Nazi occupation during WWII. - Macron visited London on June 18 to commemorate the 80th anniversary of former French president Charles de Gaulle's appeal to French people to resist the Nazi occupation during World War II. Photo by Tolga AKMEN/Pool/ABACAPRESS.CO

Britain's Prince Charles, left, speaks to young people who have participated in the Prince's Trust courses during a function for the Trust, in Auckland,New Zealand, Wednesday, March 9, 2005. Prince Charles is on a six day visit to New Zealand. (AP Photo/William West, Pool)

RM2PEB60D–Britain's Prince Charles, left, speaks to young people who have participated in the Prince's Trust courses during a function for the Trust, in Auckland,New Zealand, Wednesday, March 9, 2005. Prince Charles is on a six day visit to New Zealand. (AP Photo/William West, Pool)

RMGC4CP7–Britain's Prince Charles speaks at a state dinner held in Ottawa last night in honour of the heir to the throne and his wife.

Britain's Prince Charles (R) speaks to Australian military personnel as he walks along the line during his ceremonial arrival in Canberra Friday, March 4, 2005. Royal fever has been sweeping Australia as Britain's Prince Charles and Denmark's Crown Prince Frederik and Crown Princess Mary criss-cross the continent this week. (AP Photo/David Gray, Pool)

RM2PEBNAY–Britain's Prince Charles (R) speaks to Australian military personnel as he walks along the line during his ceremonial arrival in Canberra Friday, March 4, 2005. Royal fever has been sweeping Australia as Britain's Prince Charles and Denmark's Crown Prince Frederik and Crown Princess Mary criss-cross the continent this week. (AP Photo/David Gray, Pool)

RM2D35DN1–Britain's Queen Elizabeth II and the Prince of Wales attend the Braemar Gathering in Scotland.

Britain's Prince Charles, centre, speaks with his mother Queen Elizabeth as he holds the arm of his bride Camilla Duchess of Cornwall as they leave St George's Chapel in Windsor, England following the church blessing of their civil wedding ceremony, Saturday, April 9, 2005. In the background between Queen Elizabeth and Prince Charles, stands Prince Andrew the Duke of York. (AP Photo/ Alastair Grant, Pool)

RM2NGC7ED–Britain's Prince Charles, centre, speaks with his mother Queen Elizabeth as he holds the arm of his bride Camilla Duchess of Cornwall as they leave St George's Chapel in Windsor, England following the church blessing of their civil wedding ceremony, Saturday, April 9, 2005. In the background between Queen Elizabeth and Prince Charles, stands Prince Andrew the Duke of York. (AP Photo/ Alastair Grant, Pool)

Britain's Prince Charles speaks to school children at the opening ceremony for the Clore Learning Centre at Hampton Court Palace, Middlesex.

RMG9PAAC–Britain's Prince Charles speaks to school children at the opening ceremony for the Clore Learning Centre at Hampton Court Palace, Middlesex.

Britain's Prince Charles speaks at the Royal Perth Hospital, in Perth, western Australia Tuesday March 1, 2005. Prince Charles on Tuesday visited the Perth hospital where victims of the terrorist bombings in Bali were treated in 2002, in the first official function of his five-day, five-city whirlwind tour of Australia. The prince is scheduled to visit Perth, Alice Springs, Melbourne, Sydney and Canberra. (AP Photo/Ian Waldie, Pool)

RM2PEC272–Britain's Prince Charles speaks at the Royal Perth Hospital, in Perth, western Australia Tuesday March 1, 2005. Prince Charles on Tuesday visited the Perth hospital where victims of the terrorist bombings in Bali were treated in 2002, in the first official function of his five-day, five-city whirlwind tour of Australia. The prince is scheduled to visit Perth, Alice Springs, Melbourne, Sydney and Canberra. (AP Photo/Ian Waldie, Pool)