Rivers in his constituency are “drowning under a barrage of pollution”, says David Chadwick.

The Brecon, Radnor and Cwm Tawe MP said in a Westminster Hall debate that he is privileged to represent a constituency that is home to some of the UK’s most powerful rivers, including the Wye, Usk and Towy.

But he said “these national treasures” are heavily polluted, harming the environment and local wildlife and “jeopardising industries such as tourism, leisure and angling”.