It’s fair to say that National Highways chief executive Nick Harris got a bit of a kicking from MPs yesterday – on the subject of failed tree planting – but he was allowed to give a very vague answer on the subject of funding for cleaning up water pollution.
To recap, Harris and the company’s director of environmental sustainability, Stephen Elderkin, were in front of the Environmental Audit Committee to talk about biodiversity, including tree planting, as well as what the company is doing to mitigate the toxic runoff from its roads.
The headline on water pollution is that Harris said the company had mitigated just 40 “high risk” outlets since he last appeared before the committee in 2021 but now estimated that there are another 250 approximately, which it has pledged to mitigate by 2030.
That is the date – the original end date for the third Road Investment Strategy (RIS 3) in March 2030 – given in National Highways’ 2030 Water Quality Plan, subject to funding of course.

Harris described this as a prioritisation process of getting stuck into the very worst locations, adding that the company has 180 locations where it is developing designs, with more high risk locations expected to be identified.
The problem is that National Highways has no funding for this at the moment. It has a promise of nearly £25bn up to 2031 under the draft RIS but no specific funding streams. Ministers have promised a new focus on repairs and renewals, alongside a long and growing tail of enhancement schemes but there are as yet no designated funds for the environment, for example.
Labour MP Olivia Blake raised the issue of funding and asked Harris what certainty he had that the company would be able to meet the target on mitigation. He replied with wishful thinking:
We’re proceeding on the basis that we will be funded to do all 250. The interim year hasn’t affected our design work. We’re moving forward on the assumption that it’s all going to be funded.
He went on to explain the convoluted process by which National Highways, the Office of Rail and Road and the Department for Transport work towards a final RIS 3 by 2030.
