Profile

The most senior official at the Home Office is resigning after a 33-year civil service career.

British cycling is enjoying unprecedented success and cyclists are now household names. Dave Brailsford, the performance director of the British cycling team, has been widely credited with Britain's rise to the top. His winning methods include combining an encyclopaedic knowledge of the sport with an obsessive work ethic, relentlessly crunching numbers and other data in a constant quest for any competitive advantage, however small. But he's not just a numbers man. Ruth Alexander talks to those who know Brailsford, and finds out what motivates the quiet cycling supremo.

Presenter Ruth Alexander

With his trademark blonde hair and a reputation for colourful antics, Boris Johnson has had a seemingly unstoppable rise through the ranks of UK politics. After seizing a second term as London mayor earlier this year and thanks to the Olympic games coming to London, he's become firmly associated with the city on the world stage.

But alongside his various careers as mayor, journalist, author and quiz show panellist, it seems his political prospects within the ranks of the Tory party also remain strong. Recent polls suggest a groundswell of support for him as a potential future leader of the party. James Silver charts the rise and rise of a unique politician.

Producer - Gail Champion.

Pascale Harter looks at the life and career of the singer Engelbert Humperdinck.

With mixed news about audiences and losses in its Annual Report, the creative controller of Channel 4, Jay Hunt, is in the spotlight. Andy Denwood profiles one of the most powerful women in broadcasting.

Since arriving at the publicly owned broadcaster last year, Hunt has promised to take creative risks and bring a sense of mischief. There have been new commissions - The Undateables and Make Bradford British - but changes to the flagship Channel 4 News programme with additional presenters and new reporters has ruffled feathers in the newsroom. The younger audience is falling and Ofcom have asked for its strategy of how to re-engage viewers.

Jay Hunt - who began life in Australia as Jacquiline - had a meteoric rise from a young researcher at the BBC. Despite ructions over her changes to the Six O'Clock News and accusations of dumming down, by the age of 40 she was controller of BBC1 steering the Corporation's premier channel through controversies: the Jonathan Ross affair, the sacking of Carol Thatcher and the charge of ageism against former Countryfile presenter Miriam O'Reilly.

Now at Channel 4 her ability to attract a strong team and build a successful network is being put to the test.

Greece's far left-wing bloc, Syriza, made dramatic gains in last weekend's election to become the country's second largest party. The vote has split the country politically and the party's charismatic young leader Alexis Tsipras is credited with its success based on a populist anti-austerity message.

After three failed attempts to form a government the country now faces another election - and the far left coalition could well make further gains.

Tsipras has been described as a cool, mild-mannered politician who shuns neckties and likes to get around on his motorcycle. Born four days after the fall of Greece's military dictatorship in July 1974, his first political experiences were as part of Greece's school occupations in 1991.

Mr Tsipras became leader of Syriza in 2008 and was elected to parliament in 2009. He first emerged on the political scene when he came third in the Athens mayoral race.

The former communist youth activist has been accused by some of inciting violent protests and failing to condemn their actions. Others claim he is misleading voters by promising an economic future he cannot possibly deliver.

Presenter: Andy Denwood

Producer: Rob Cave.

Multi-lingual, a good listener and a surprise choice for arguably the biggest job in British sport - manager of the England football team.

Hodgson has coached football teams in eight different countries during a career which has lasted 36 years. He is said to have revolutionised the techniques of some players - he took Switzerland to the last 16 of the 1994 World Cup. He's much better known in Italy than the UK after his time at Internationale Milan.

At Fulham he was regarded as an eccentric but clever choice as they avoided relegation before reaching the 2010 Europa League Final.

Hodgson is not into mind games and isn't known for saying things for impact - like some other Premier League managers. Some say he is bereft of ego and a gentleman, others that he can be as passionate and defensive as the rest. He has a rigorous approach to preparation - players at Liverpool complained about the complexity of his training schedules.

A great lover of literature he is said to have read the works of nearly every Nobel prize winner - not intimidated by taking on the works of foreign authors.

Gerry Northam profiles the man friends say has a complex character - on the one hand obsessed with football, on the other never happier than when away from the beautiful game.

Producer: Samantha Fenwick.

Mary Ann Sieghart profiles Jeremy Hunt, the Culture Secretary, who has come under pressure to resign following the release of emails to the Leveson Inquiry. The compromising emails suggest that he or his office was providing inside information to the Murdoch family over the BSkyB takeover bid. He, however, insists that he behaved with complete integrity during the process.

Producers:

Chris Bowlby profiles Ralf Hutter, the only founding member left of the German electronic band Kraftwerk. Coming from an obscure industrial background, Kraftwerk first formed in 1970, and are now credited with being hugely influential on a host of musicians and on music of diverse types, including electronic, hip hop, house and drum and base.

Producer:

After North Korea's controversial rocket launch and celebrations to mark the centenary of the birth of the country's "Great Leader," David Torrance profiles the country's new young leader, Kim Jong-un. Little is known about him in this most secretive of states. But after the death of his father Kim Jong-Il late last year, he has begun to establish his authority in relation to North Korea's military and ruling communist party, and he has been confirmed this week in the most senior political office. He will also have to decide how far to seek rapprochement with the outside world. Has his education, partly in Switzerland, made him a new kind of North Korean leader?