The family of missing Katrice Lee are marching to Downing Street in London to mark the anniversary of her disappearance in 1981.
Katrice was two years old when she went missing from a NAAFI supermarket in Germany where her father, Richard Lee, was stationed at the time.
The toddler disappeared on her birthday over thirty years ago and has not been seen since.
The case of missing Katrice was brought the parliament earlier this month when MPs debated how the case had been handled.
The government had previously promised to do all it could to get the family from Teesside more information about their daughter's disappearance.
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MPs claim 240 people, who thought they were being kept on at a former steel works, were sent home in the middle of their shifts.
Ellis Short hopes to hold formal discussions with over the next 48 hours as he attempts to identify Dick Advocaat's replacement.