Children and young people have produced a DVD highlighting the "horrors" of their detention at the Dungavel immigration removal centre which they hope will lead to the end of the practice.

The Unjust Treatment documentary - researched, scripted and filmed by a group of young people in Glasgow who have been personally affected by detention - is supported by Save the Children and is to be sent to the Scottish Executive, the Home Office, MSPs and MPs as part of their campaign to stop the detention of children.

The 10-minute DVD features interviews with the children and their parents who tell distressing tales of their detention experiences in Dungavel and other UK centres.

Some of the young people are expected to head to Westminster to lobby MPs as part of their campaign.

Julia Robert, 19, an asylum seeker originally from Sri Lanka now living in Glasgow, decided to help interview other young detainees for the DVD after hearing about the campaign at her school, Shawlands Academy.

She said: "This detention is spoiling people's lives and we do hope that it will help bring action to stop this."

Susan Fisher, Save the Children's assistant programme director in Scotland, said: "Save the Children is calling for the detention of children who have sought safety in Britain to end and for alternatives to be put in place that stop any more children having to experience fear and uncertainty."

The DVD campaign will be launched today in Glasgow in the wake of new figures which show the number of children being locked up in Dungavel is on the increase.

An inspection, making 76 recommendations for improvements, found 122 children had been kept at Dungavel in the first 11 months of last year compared with 94 in the previous 12 months.