Madeleine, One Year On: Campaign For Change focuses on Kate and Gerry McCann’s campaign to prevent other families going through a similar ordeal. It also features extended contributions from the couple.

It is the only TV programme the McCanns have agreed to be filmed for in the run up to the anniversary.

The special follows Kate and Gerry McCann as they launch a campaign to introduce a USA-style Amber Alert system to Europe, in which law enforcement agencies are empowered to commandeer airtime on TV and radio when a child goes missing. The system also includes alerts via email, electronic traffic signs and text message.

The McCanns hope a European-wide scheme will help reduce the chances of this experience happening to other families.

The documentary team has followed Kate and Gerry McCann since early January. Footage will include the couple in their home in Rothley and travelling to Brussels and Washington as they pursue their campaign.

They talk about Madeleine, the night she went missing, becoming “Arguido” suspects in Portugal, and the decision to return to Britain.

Wednesday 30 April 2008 8:00pm - 10:00pm on ITV1.