London, Oct. 1 -- Britain on Wednesday began trial of the country's first hydrogen-powered train that does not emit harmful gases and uses hydrogen and oxygen to produce electricity, water and heat.

The trial of HydroFLEX in Warwickshire in the Midlands follows almost two years of development and more than £1 million of investment by both rolling stock company Porterbrook and the University of Birmingham, officials said.

The technology, described by officials as "ground-breaking", will also be available by 2023 to retrofit current in-service trains to hydrogen, helping decarbonise the rail network and make rail journeys greener and more efficient.

Transport secretary Grant Shapps hopes the Tees Valley in north-east England will beco...