Four students made it to the final of an enterprise competition run by Holy Trinity Senior School, Halifax.

They faced a panel of dragons – Mike James, Calderdale 14-19 consultant, Rob Marsh and Marjorie Graham, co-directors of the Business and Enterprise College, and Janet Dunn, business and enterprise officer at Holy Trinity – in the style of the BBC TV programme.

Year 7 pupil Mark Tyler, partnered by mum Sharon, presented his idea for a system of recycling "grey" water called the Third Tap Company.

Satellite Location Tracking, where microchips are inserted into the legs of persistent criminals as an alternative to prison, was the idea of Year 11 student Ben Whatley, working with mum Gail.

Alex Barrett, from Year 8, and mum Nicki produced Easy Pack, a grille that attaches to a supermarket trolley to assist with packing.

But the winning invention was by Ehsin Amin, from Year 11.

His creation, the Snac-Kup, is an innovative snack container, incorporating a fast-food type drink cup with an insulated food or snack section.

It reduces packaging and is easier to carry on the move.

The panel decided Ehsin could go into production with only a few minor adjustments.

He won a Nintendo DS Lite and £100 towards bringing his idea to fruition.

The other contestants also received investment to help turn their products into reality.

Mr James said: "This competition asked the students for a level of creativity which would challenge them, as the innovation had to be tempered with an understanding of national and global issues."

Mr Marsh said: "While our enterprise specialism is not all about making money and pushing everyone into business ownership, we do have a remit to ensure that students are given the opportunity to develop entrepreneurial skills.

"This competition has provided an exciting and challenging opportunity, which involved an element of teamwork and bringing together the family to work on a project.

"In addition, it has highlighted to us some exceptionally talented young people who have potential to develop further entrepreneurial skills.

"This allows us to celebrate what they have done and identify how we can help them realise their dreams in the future."