Environment secretary reportedly raises concerns that customers would face ‘undue burden’ from £10bn plan

• Thames Water should be nationalised, says Burnham

The UK environment secretary has objected to a £10bn rescue proposal for Thames Water because it would place an “undue burden” on consumers, pushing the troubled utilities firm closer towards public ownership.

Emma Reynolds wrote to the regulator Ofwat on Monday to raise concerns about the plan for the UK’s biggest water company as she is worried that customers will lose out.