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2013 status: A member of the so-called gang of seven who walked with Kim Jong-il’s hearse in 2011. One of the few survivors of that group, he was moved to another post and now runs the citizen militias.

2013 status: Always present at public events. He is a crucial figure as he is charge of the daily management of production of weapons and WMDs. In 2012 he was standing right behind Kim Jong-un.

2013 status: Was not prominent last year. He has received a recent promotion and his status is regarded as solid.

2013 status: Promoted in August. Is not visible in the 2012 picture. He is the fourth person to hold this job in two years, but his position is currently regarded as stable.

2013 status: Considered extremely powerful. He has seen his influence increase over the last year.

2013 status: Is a regular fixture at major state events at the leader’s side.

2013 status: Is a permanent fixture at such events. A symbolic figurehead with little real power.

2013 status: On the face of it, he appears to have tightened control after his purge, but some analysts see it as a sign of weakness.

2013 status: Was not prominent in the 2012 picture, but has been promoted and is now in a position of favour and power. He is thought to have a similar reformist outlook to Chang Song-thaek and is believed to have visited South Korea to survey its economic development.

2013 status: He is one of the old guard who has not been purged. One of the so-called gang of seven who walked with the hearse of Kim Jong-il in 2011. He features in the 2012 photograph.

2013 status: Another one of the so-called gang of seven. A remnant of the old era and thought to be a reformer. In 2013 he was not visible. Analysts think that because he is ageing he may be permitted to shed roles and responsibility.

2013 status: Powerful and a member of the Kim family by marriage. He has moved up a row from 2012.

2013 status: Had a prominent role in six-party talks over the country's nulear programme. Was though to be close to Kim Jong-il and is clearly still a powerful force. Moved up a row from 2012.

2012 status: In 2012 she was in a position of great power as the younger sister of Kim Jong-il whose death they were commemorating. In 2013 she was absent following her husband Chang Song-thaek's execution.

2012 status: In December 2012 she was in her first year as the first lady of North Korea and had made a handful of public appearances by that time. This was one of the most important.

2012 status: In December 2012 he had been leader for a year and was still surrounded by the men appointed to oversee his transition to the leadership.

2012 status: In charge of the scientists and researchers in North Korea’s weapons programme. He had pride of place in 2012 because they had launched a missile just five days earlier. He and a number of his staff were invited to commemorate the anniversary as a mark of favour. They did not feature in the 2013 image

2012 status: He was powerful in 2012, but appears to have gained more favour over the last year.

2012/13 status: Kim Jong-un's uncle was regarded as a powerful figure in 2012 and was seen by outside observers as the new leader's mentor. He was known to be a proponent of economic reform. By December 2013 Chang Song-thaek had been executed - accused of multiple crimes, including forming a power base and attempting to overthrow the state.

2012/13 status: In 2012 this was a powerful position. He has since been demoted and does not figure prominently in 2013 picture.

2012/13 status: Visited Cuba in July 2013, shortly before missiles were discovered on a North Korean ship which had left Cuba and docked in Panama. He has since disappeared and was thought to have fallen from favour. However, in an image of Chang Song-thaek being removed from parliament, he can be seen sitting in front of Chang.

2013 status: He runs the secret police and is regarded as very powerful. He is likely to have played a key role in Chang Song-thaek’s demise. In 2012 he was in the second row, while in 2013 he has moved up to the front row.