Tweddle was born on 1 April 1985 in Johannesburg, South Africa and moved with her family to Bunbury, Cheshire, England when she was 18 months old.

Tweddle attended The Queen's School, Chester[10] and completed a foundation degree with the University of Liverpool.

"[17] In July, Tweddle competed for England at the 2002 Commonwealth Games in Manchester, United Kingdom.

[22] In October, Tweddle competed at the World Cup event in Glasgow, United Kingdom.

[28] In February, Tweddle competed at the World Cup event in New York City, United States.

[30] In October, Tweddle competed at the World Cup event in Glasgow, United Kingdom.

In the back of my mind I was still hoping to do bars but the doctors advised me to leave it if I wanted to be fit for the Europeans.

"[37] In November, Tweddle competed at the World Cup event in Glasgow, United Kingdom.

[38] In December, Tweddle competed at the World Cup final in São Paulo, Brazil.

[42] Tweddle said, "It was quite hard, but it was a case of not competing at Europeans, or do a couple of events and getting back on the international stage again.

I made the decision to alter my second floor tumble just to help my foot and make sure I didn't injure it before the Worlds, but everything else was fine.

[44] In November, Tweddle competed at the World Cup event in Glasgow, United Kingdom.

She placed second on uneven bars with a score of 14.550 and was unable to compete on any other apparatus due to an ankle injury.

Beam and vault are the ones which hurt my feet and I can't really upgrade enough to be up there to contend for the all around anymore.

She contributed scores of 15.700 on uneven bars and 15.450 on floor toward her club, City of Liverpool's, first-place finish.

I wasn't watching the previous routines but from the noise of the crowd I could tell the two Chinese girls ahead of me had fallen and so I tried to remain calm, but knew at that point that if I went clean I had a great chance of winning the title.

"[66] Tweddle was appointed Member of the Order of the British Empire (MBE) in the 2010 New Year Honours.

"[67] In April, Tweddle competed at the European Championships in Berlin, Germany despite having an injured shin.

She contributed scores of 14.900 on uneven bars and 14.300 on floor toward her club, City of Liverpool's, first-place finish.

[73] She said, "The week has been a great success as we achieved our number one aim and we've got the British women's team qualified for 2012 so that's now the focus.

[75] In April, Tweddle had keyhole surgery on her knee and was unable to compete at the European Championships in May.

She said, "I'm disappointed not to be in a position to attend the European's but also thankful that this gives me the opportunity to get myself fully fit and ready for the rest of the season, certainly it's much better for this process to happen now rather than later in the year!

I am very much still in the gym every day and will continue to work alongside the British Gymnastics medical team to ensure I manage my recovery.

The line-up for the European Championship demonstrates the strength in depth that we have, and I'm sure the girls will do a great job in Brussels.

Everything about competing in the Olympic Games is exciting, the moment you get the official letter, the kitting out, the multi-sport atmosphere, it's all a huge honour to be a part of and I can't wait.

"[78] At the end of July, Tweddle competed at the 2012 Summer Olympics in London, United Kingdom.

[79] In the uneven bars final, Tweddle won the bronze medal with a score of 15.916, finishing behind Aliya Mustafina of Russia and reigning Olympic champion on the event He Kexin of China.

[80] She said, "It's the best feeling in the world to win the bronze medal, there was one point today I thought I'd end in 4th like in Beijing 08, so I'm really happy.

"[81] Results as per Tweddle's official competition record at the International Gymnastics Federation athlete profile page.

[83][84] In 2012 Tweddle was one of five Olympians chosen as part of a series of body-casting artworks by Louise Giblin exhibited in London and copies being sold in aid of the charity Headfirst.