By Ed Davey

A successful global climate deal in Paris needs the sort of leadership and cross-party trust that UK parties have shown on climate change

I became UK energy and climate change secretary in February 2012 – that makes me the longest serving minister with this portfolio for 25 years. In this time, I have learned one lesson above all else: you can only make real progress on climate change with political leadership and trust between all parties. That’s why the new joint climate change agreement between the leaders of the three major British political parties – Conservatives, Labour and Liberal Democrats – is so important.

This cross-party agreement shows the strength of the UK’s commitment to tackling climate change. The British public, businesses and our European and international partners can now be in no doubt – May’s general election poses little threat to the UK continuing to be a leading voice on climate change and the transition to a prosperous low carbon economy.

Related: Cameron, Clegg and Miliband sign joint climate pledge