In January 2010, he graduated from the Defence Helicopter Flying School at RAF Shawbury, where he had been under the instruction of Squadron Leader Craig Finch. On 26 January 2010, he transferred to the Search and Rescue Training Unit at RAF Valley, Anglesey, to receive training on the Sea King search and rescue helicopter; he graduated from this course on 17 September 2010. This made him the first member of the British royal family since Henry VII to live in Wales.
On 6 May 2010, May was re-elected MP for Maidenhead with an increased majority of 16,769 – 60% of the vote. This followed an earlier failed attempt by the Liberal Democrats to unseat her in 2005, as one of that party's leading "decapitation-strategy" targets.
The 2010 general election resulted in the Conservatives, led by Cameron, winning the largest number of seats (306). This was, however, 20 seats short of an overall majority and resulted in the nation's first hung parliament since February 1974.
Prince Charles presented him with his flying brevet (wings) on 7 May 2010 at a ceremony at the Army Air Corps Base (AAC), Middle Wallop. Harry had let it be known he intended to fly Apache attack helicopters if he was successful in passing the rigorous Apache training course. This would allow him to see active military service again on the frontline in Afghanistan.
On 11 May 2010, following the resignation of Gordon Brown as Prime Minister and on his recommendation, Queen Elizabeth II invited Cameron to form a government. At age 43, Cameron became the youngest Prime Minister since Lord Liverpool in 1812, beating the record previously set by Tony Blair in May 1997.
Cameron outlined how he intended to "put aside party differences and work hard for the common good and for the national interest." As one of his first moves Cameron appointed Nick Clegg, the leader of the Liberal Democrats, as Deputy Prime Minister on 11 May 2010.
On 12 May 2010, when May was appointed Home Secretary and Minister for Women and Equality by Prime Minister David Cameron as part of his first Cabinet, she became the fourth woman to hold one of the British Great Offices of State, after Margaret Thatcher (Prime Minister), Margaret Beckett (Foreign Secretary) and Jacqui Smith (Home Secretary).
He also started as Chelsea were victorious against Portsmouth in the 2010 FA Cup final, however he would come off injured shortly before half-time after a tackle by Kevin-Prince Boateng. As a result of the injury, Ballack was not able to participate in the 2010 World Cup.
On Wednesday 26 May 2010, a permanent plaque was unveiled on the Centenary Stand at Anfield to honour the Juventus fans who died 25 years earlier. This plaque is one of two permanent memorials to be found at Anfield, along with one for the 96 fans killed in the Hillsborough disaster in 1989.
On 9 June 2010, it was announced that Ballack, along with teammates Joe Cole and Juliano Belletti, would leave Chelsea on a free transfer after his contract was not renewed. It was reported that while manager Carlo Ancelotti wanted to retain Ballack, club owner Roman Abramovich was only willing to offer a one-year deal due to Ballack's age.
On 16 November 2010, Clarence House announced that Prince William and Middleton were to marry; the couple had become engaged in Kenya in October. The engagement ring given by William to Catherine had belonged to his mother.
Clarence House announced the engagement on 16 November 2010. Kate reverted her name to Catherine, to be more formal. Prince William gave Middleton the engagement ring that had belonged to his mother, Diana, Princess of Wales.