Britain's Catherine, Duchess of Cambridge reacts during her visit to University College London's Centre for Longitudinal Studies, to meet with early years researchers and learn more about their new study in London, Britain, October 5, 2021. "The Children of the 2020s", a new birth cohort study launching in England, which will track the development of children from the age of nine months to five years. Justin Tallis/Pool via REUTERS

Britain's Catherine, Duchess of Cambridge reacts during her visit to University College London's Centre for Longitudinal Studies, to meet with early years researchers and learn more about their new study in London, Britain, October 5, 2021. "The Children of the 2020s", a new birth cohort study launching in England, which will track the development of children from the age of nine months to five years. Justin Tallis/Pool via REUTERS

Britain's Catherine, Duchess of Cambridge talks with Professor Pasco Fearon and Professor Alissa Goodman during her visit to University College London's Centre for Longitudinal Studies, to meet with early years researchers and learn more about their new study in London, Britain, October 5, 2021. "The Children of the 2020s", a new birth cohort study launching in England, which will track the development of children from the age of nine months to five years. Justin Tallis/Pool via REUTERS

Britain's Catherine, Duchess of Cambridge sits with Professor Pasco Fearon as they watch a presentation during her visit to University College London's Centre for Longitudinal Studies, to meet with early years researchers and learn more about their new study in London, Britain, October 5, 2021. "The Children of the 2020s", a new birth cohort study launching in England, which will track the development of children from the age of nine months to five years. Justin Tallis/Pool via REUTERS

Britain's Catherine, Duchess of Cambridge reacts during her visit to University College London's Centre for Longitudinal Studies, to meet with early years researchers and learn more about their new study in London, Britain, October 5, 2021. "The Children of the 2020s", a new birth cohort study launching in England, which will track the development of children from the age of nine months to five years. Justin Tallis/Pool via REUTERS

Britain's Catherine, Duchess of Cambridge talks with Professor Pasco Fearon during her visit to University College London's Centre for Longitudinal Studies, to meet with early years researchers and learn more about their new study in London, Britain, October 5, 2021. "The Children of the 2020s", a new birth cohort study launching in England, which will track the development of children from the age of nine months to five years. Justin Tallis/Pool via REUTERS

Britain's Catherine, Duchess of Cambridge talks with Professor Pasco Fearon and Professor Alissa Goodman during her visit to University College London's Centre for Longitudinal Studies, to meet with early years researchers and learn more about their new study in London, Britain, October 5, 2021. "The Children of the 2020s", a new birth cohort study launching in England, which will track the development of children from the age of nine months to five years. Justin Tallis/Pool via REUTERS

Britain's Catherine, Duchess of Cambridge talks with Professor Pasco Fearon during her visit to University College London's Centre for Longitudinal Studies, to meet with early years researchers and learn more about their new study in London, Britain, October 5, 2021. "The Children of the 2020s", a new birth cohort study launching in England, which will track the development of children from the age of nine months to five years. Justin Tallis/Pool via REUTERS

Britain's Catherine, Duchess of Cambridge talks with Professor Pasco Fearon during her visit to University College London's Centre for Longitudinal Studies, to meet with early years researchers and learn more about their new study in London, Britain, October 5, 2021. "The Children of the 2020s", a new birth cohort study launching in England, which will track the development of children from the age of nine months to five years. Justin Tallis/Pool via REUTERS

Britain's Catherine, Duchess of Cambridge, is shown the library by Professor Pasco Fearon during her visit to University College London's Centre for Longitudinal Studies, to meet with early years researchers and learn more about their new study in London, Britain, October 5, 2021. "The Children of the 2020s", a new birth cohort study launching in England, which will track the development of children from the age of nine months to five years. Justin Tallis/Pool via REUTERS

Britain's Catherine, Duchess of Cambridge, reacts during her visit to University College London's Centre for Longitudinal Studies, to meet with early years researchers and learn more about their new study in London, Britain, October 5, 2021. "The Children of the 2020s", a new birth cohort study launching in England, which will track the development of children from the age of nine months to five years. Justin Tallis/Pool via REUTERS

Britain's Deputy Chief Medical Officer Professor Jonathan Van-Tam attends a media briefing on COVID-19 at Downing Street in London, Britain September 14, 2021. Justin Tallis/Pool via REUTERS

Chair of the Joint Committee on Vaccination and Immunisation (JCVI) Professor Wei Shen Lim, Britain's Deputy Chief Medical Officer Professor Jonathan Van-Tam, and Chief Executive of the Medicines and Healthcare Products Regulatory Agency (MHRA) June Raine, attend a media briefing on COVID-19 at Downing Street in London, Britain September 14, 2021. Justin Tallis/Pool via REUTERS

Chief Executive of the Medicines and Healthcare Products Regulatory Agency (MHRA) June Raine attends a media briefing on COVID-19 at Downing Street in London, Britain September 14, 2021. Justin Tallis/Pool via REUTERS

Britain's Deputy Chief Medical Officer Professor Jonathan Van-Tam, and Chief Executive of the Medicines and Healthcare Products Regulatory Agency (MHRA) June Raine, listen to a journalist's question during a media briefing on COVID-19 at Downing Street in London, Britain September 14, 2021. Justin Tallis/Pool via REUTERS

Members of the media listen as Chair of the Joint Committee on Vaccination and Immunisation (JCVI) Professor Wei Shen Lim, Britain's Deputy Chief Medical Officer Professor Jonathan Van-Tam, and Chief Executive of the Medicines and Healthcare Products Regulatory Agency (MHRA) June Raine, hold a news conference on COVID-19 at Downing Street in London, Britain September 14, 2021. Justin Tallis/Pool via REUTERS

Britain's Deputy Chief Medical Officer Professor Jonathan Van-Tam speaks during a media briefing on COVID-19 at Downing Street in London, Britain September 14, 2021. Justin Tallis/Pool via REUTERS

Britain's Deputy Chief Medical Officer Professor Jonathan Van-Tam speaks during a media briefing on COVID-19 at Downing Street in London, Britain September 14, 2021. Justin Tallis/Pool via REUTERS

Chair of the Joint Committee on Vaccination and Immunisation (JCVI) Professor Wei Shen Lim attends a media briefing on COVID-19 at Downing Street in London, Britain September 14, 2021. Justin Tallis/Pool via REUTERS

Chair of the Joint Committee on Vaccination and Immunisation (JCVI) Professor Wei Shen Lim, Britain's Deputy Chief Medical Officer Professor Jonathan Van-Tam, and Chief Executive of the Medicines and Healthcare Products Regulatory Agency (MHRA) June Raine, attend a media briefing on COVID-19 at Downing Street in London, Britain September 14, 2021. Justin Tallis/Pool via REUTERS

Chair of the Joint Committee on Vaccination and Immunisation (JCVI) Professor Wei Shen Lim attends a media briefing on COVID-19 at Downing Street in London, Britain September 14, 2021. Justin Tallis/Pool via REUTERS

Chair of the Joint Committee on Vaccination and Immunisation (JCVI) Professor Wei Shen Lim, Britain's Deputy Chief Medical Officer Professor Jonathan Van-Tam, and Chief Executive of the Medicines and Healthcare Products Regulatory Agency (MHRA) June Raine, attend a media briefing on COVID-19 at Downing Street in London, Britain September 14, 2021. Justin Tallis/Pool via REUTERS

Chair of the Joint Committee on Vaccination and Immunisation (JCVI) Professor Wei Shen Lim, Britain's Deputy Chief Medical Officer Professor Jonathan Van-Tam, and Chief Executive of the Medicines and Healthcare Products Regulatory Agency (MHRA) June Raine, attend a media briefing on COVID-19 at Downing Street in London, Britain September 14, 2021. Justin Tallis/Pool via REUTERS

Soccer Football - Euro 2020 - Semi Final - England v Denmark - Wembley Stadium, London, Britain - July 7, 2021 England fans celebrate after the match Pool via REUTERS/Justin Tallis

Soccer Football - Euro 2020 - Semi Final - England v Denmark - Wembley Stadium, London, Britain - July 7, 2021 Denmark's Kasper Schmeichel and Simon Kjaer looks dejected after the match Pool via REUTERS/Justin Tallis

Soccer Football - Euro 2020 - Semi Final - England v Denmark - Wembley Stadium, London, Britain - July 7, 2021 Britain's Prime Minister Boris Johnson with his wife Carrie Johnson celebrate after the match Pool via REUTERS/Justin Tallis

Soccer Football - Euro 2020 - Semi Final - England v Denmark - Wembley Stadium, London, Britain - July 7, 2021 Britain's Prime Minister Boris Johnson with his wife Carrie Johnson celebrate after the match Pool via REUTERS/Justin Tallis

Soccer Football - Euro 2020 - Semi Final - England v Denmark - Wembley Stadium, London, Britain - July 7, 2021 Denmark's Kasper Schmeichel and Simon Kjaer looks dejected after the match Pool via REUTERS/Justin Tallis

Soccer Football - Euro 2020 - Semi Final - England v Denmark - Wembley Stadium, London, Britain - July 7, 2021 England manager Gareth Southgate with Denmark's Pierre-Emile Hojbjerg after the match Pool via REUTERS/Justin Tallis

Soccer Football - Euro 2020 - Semi Final - England v Denmark - Wembley Stadium, London, Britain - July 7, 2021 England manager Gareth Southgate applauds fans after the match Pool via REUTERS/Justin Tallis

Soccer Football - Euro 2020 - Semi Final - England v Denmark - Wembley Stadium, London, Britain - July 7, 2021 Denmark's Kasper Schmeichel, Christian Norgaard and Joachim Andersen looks dejected after the match Pool via REUTERS/Justin Tallis

Soccer Football - Euro 2020 - Semi Final - England v Denmark - Wembley Stadium, London, Britain - July 7, 2021 England manager Gareth Southgate after the match Pool via REUTERS/Justin Tallis

Soccer Football - Euro 2020 - Semi Final - England v Denmark - Wembley Stadium, London, Britain - July 7, 2021 Denmark's Christian Norgaard and Joachim Andersen looks dejected after the match Pool via REUTERS/Justin Tallis

Soccer Football - Euro 2020 - Semi Final - England v Denmark - Wembley Stadium, London, Britain - July 7, 2021 Denmark's Simon Kjaer looks dejected after the match Pool via REUTERS/Justin Tallis

Soccer Football - Euro 2020 - Fans gather for England v Denmark - Trafalgar Square, London, Britain - July 7, 2021 England manager Gareth Southgate celebrates after the match REUTERS/Justin Tallis

Soccer Football - Euro 2020 - Fans gather for England v Denmark - Trafalgar Square, London, Britain - July 7, 2021 England manager Gareth Southgate celebrates after the match REUTERS/Justin Tallis

Soccer Football - Euro 2020 - Semi Final - England v Denmark - Wembley Stadium, London, Britain - July 7, 2021 England fans during the match Pool via REUTERS/Justin Tallis

Soccer Football - Euro 2020 - Semi Final - England v Denmark - Wembley Stadium, London, Britain - July 7, 2021 England's Harry Kane in action with Denmark's Pierre-Emile Hojbjerg Pool via REUTERS/Justin Tallis

Soccer Football - Euro 2020 - Semi Final - England v Denmark - Wembley Stadium, London, Britain - July 7, 2021 England's Harry Maguire in action with Denmark's Martin Braithwaite Pool via REUTERS/Justin Tallis

Soccer Football - Euro 2020 - Semi Final - England v Denmark - Wembley Stadium, London, Britain - July 7, 2021 England's Harry Kane celebrates scoring their second goal Pool via REUTERS/Justin Tallis

Soccer Football - Euro 2020 - Semi Final - England v Denmark - Wembley Stadium, London, Britain - July 7, 2021 England's Harry Kane celebrates scoring their second goal with teammates Pool via REUTERS/Justin Tallis

Soccer Football - Euro 2020 - Semi Final - England v Denmark - Wembley Stadium, London, Britain - July 7, 2021 England's Harry Kane celebrates scoring their second goal with teammates Pool via REUTERS/Justin Tallis

Soccer Football - Euro 2020 - Semi Final - England v Denmark - Wembley Stadium, London, Britain - July 7, 2021 England's Harry Kane celebrates scoring their second goal with teammates Pool via REUTERS/Justin Tallis

Soccer Football - Euro 2020 - Semi Final - England v Denmark - Wembley Stadium, London, Britain - July 7, 2021 England's Harry Kane celebrates scoring their second goal with Phil Foden and Jordan Henderson Pool via REUTERS/Justin Tallis

Soccer Football - Euro 2020 - Semi Final - England v Denmark - Wembley Stadium, London, Britain - July 7, 2021 England's Harry Kane celebrates scoring their second goal Pool via REUTERS/Justin Tallis

Soccer Football - Euro 2020 - Semi Final - England v Denmark - Wembley Stadium, London, Britain - July 7, 2021 England's Harry Kane celebrates scoring their second goal Pool via REUTERS/Justin Tallis

Soccer Football - Euro 2020 - Semi Final - England v Denmark - Wembley Stadium, London, Britain - July 7, 2021 England's Harry Kane celebrates scoring their second goal with Phil Foden Pool via REUTERS/Justin Tallis

Soccer Football - Euro 2020 - Semi Final - England v Denmark - Wembley Stadium, London, Britain - July 7, 2021 England's Harry Kane has his penalty saved by Denmark's Kasper Schmeichel but scores the rebound for their second goal Pool via REUTERS/Justin Tallis

Soccer Football - Euro 2020 - Semi Final - England v Denmark - Wembley Stadium, London, Britain - July 7, 2021 England's Harry Kane celebrates scoring their second goal with Phil Foden Pool via REUTERS/Justin Tallis

Soccer Football - Euro 2020 - Semi Final - England v Denmark - Wembley Stadium, London, Britain - July 7, 2021 England's Harry Kane celebrates scoring their second goal Pool via REUTERS/Justin Tallis

Soccer Football - Euro 2020 - Semi Final - England v Denmark - Wembley Stadium, London, Britain - July 7, 2021 England's Harry Kane misses from the penalty spot but scores the rebound for their second goal Pool via REUTERS/Justin Tallis

Soccer Football - Euro 2020 - Semi Final - England v Denmark - Wembley Stadium, London, Britain - July 7, 2021 England's Harry Kane misses from the penalty spot but scores the rebound for their second goal Pool via REUTERS/Justin Tallis

Soccer Football - Euro 2020 - Semi Final - England v Denmark - Wembley Stadium, London, Britain - July 7, 2021 England's Harry Kane misses from the penalty spot but scores the rebound for their second goal Pool via REUTERS/Justin Tallis

Soccer Football - Euro 2020 - Semi Final - England v Denmark - Wembley Stadium, London, Britain - July 7, 2021 England's Phil Foden in action with Denmark's Mathias Jensen Pool via REUTERS/Justin Tallis

Soccer Football - Euro 2020 - Semi Final - England v Denmark - Wembley Stadium, London, Britain - July 7, 2021 England's Raheem Sterling shoots at goal Pool via REUTERS/Justin Tallis

Soccer Football - Euro 2020 - Semi Final - England v Denmark - Wembley Stadium, London, Britain - July 7, 2021 Denamrk players and staff huddle before the start of extra time Pool via REUTERS/Justin Tallis

Soccer Football - Euro 2020 - Semi Final - England v Denmark - Wembley Stadium, London, Britain - July 7, 2021 England manager Gareth Southgate Pool via REUTERS/Justin Tallis

Soccer Football - Euro 2020 - Semi Final - England v Denmark - Wembley Stadium, London, Britain - July 7, 2021 England fans during the match Pool via REUTERS/Justin Tallis

Soccer Football - Euro 2020 - Semi Final - England v Denmark - Wembley Stadium, London, Britain - July 7, 2021 England's Harry Maguire reacts Pool via REUTERS/Justin Tallis

Soccer Football - Euro 2020 - Semi Final - England v Denmark - Wembley Stadium, London, Britain - July 7, 2021 Denmark's Yussuf Poulsen in action with England's Luke Shaw Pool via REUTERS/Justin Tallis