The Halo trust said "excellent progress" has been made between Princess Diana's visit to Angola in 1997 and Prince Harry's trip this year, but there are "many years of work to be done".
Wars may be over but many people are still unable to resume their normal lives, facing the threat of death or injury by landmines every day.
Halo is making excellent progress in Angola, with the province of Huambo now close to becoming mine free, but there are still many years of work to be done.
With support from Prince Harry, Angola and the international community, Halo will continue to work towards a mine-free Angola for the benefit of the Angolan people.
More top news
Shopping is moving online at pace but M&S.com is behind the competition.
In central England and across Scotland, any early cloud will clear, leaving warm sunshine for the rest of the day.
Marks & Spencer has unveiled another year of falling profits as the high street giant counts the cost of its transformation programme.