Lead detective in the Pearman investigation Detective Chief Inspector Andy Guy said the case could be easily solved with one piece of information.
There are people who know or strongly suspect who was responsible and I'm sure that plays heavily on their conscience.
"All we need is a name and we will do the rest, it is a simple matter of matching DNA. Natalie was little more than a child when she was murdered and her and her family deserve that this case is resolved
More top news
Fast trains will not stop at Bedford or Luton stations for two years from May 2018.
It will be cold overnight with a mixture of clear spells and wintry showers. The Met Office have issued a yellow warning for ice.
A man from Northamptonshire whose grandmother was murdered before he was born says that he is still fighting for the truth about her death.