Naish emerged from Bassetlaw Labour’s non-factional, anti-Corbyn wing. During the constituency’s bitter 2019 parliamentary selection, he recruited Sally Gimson as a “moderate” candidate acceptable to local members. Labour’s national executive removed her, installed a more left-wing candidate and then lost the seat heavily. The episode placed Naish among local organisers who argued that Labour had to rebuild through community campaigning rather than ideological control from London. Gimson’s account for the Fabian Society records his part in the dispute.

He became leader of Bassetlaw District Council after Simon Greaves resigned in September 2022. At the 2023 elections, Labour increased its already commanding majority to 38 of 48 seats. That result established Naish as an electorally credible council leader rather than simply the beneficiary of an internal appointment.

His election for Rushcliffe in 2024, making him its first Labour MP since 1966, transferred that local standing to Westminster. It did not immediately give him national executive power.

What he stands for

Naish’s politics combine development, green industry and institutional reform. His Bassetlaw programme treated economic growth as something councils should organise through planning, infrastructure and external investment. Fusion energy became the centrepiece: replacing a coal-fired power station with an experimental clean-energy industry fitted his argument that decarbonisation could sustain skilled employment rather than merely close old industries.

He is also more pro-European and constitutionally reforming than the Labour leadership. He supported proportional representation and was one of only 13 Labour MPs to vote in December 2025 for legislation requiring negotiations on a UK-EU customs union. The latter challenged the government’s stated Brexit boundaries, although the proposal had not become law by July 2026.

What he delivered

Naish’s clearest administrative achievement was completing Bassetlaw’s Local Plan in May 2024. It gave the council an up-to-date legal framework for directing development and resisting speculative applications. But he did not create it from scratch: the plan had been submitted to the government in July 2022, before he became leader. His contribution was to take it through examination, modification and the politically difficult adoption vote. Residents objected that roads, schools and surgeries could not support the planned housing growth.

His administration was effective at obtaining money. An independent Local Government Association review credited the council with attracting more than £60 million for town-centre and regeneration projects, including government programmes worth £20 million for Bassetlaw and nearly £18 million for Worksop. Yet these were funding allocations, not completed regeneration. The same review warned that the council lacked the capacity and transformation planning needed to deliver all its ambitions. It also identified a projected £3.8 million budget gap, equal to about 18 per cent of the 2023-24 net budget, alongside relatively low reserves. Naish left a strategically ambitious council, but not one that had resolved how to finance or execute the whole programme.

West Burton’s STEP fusion project advanced substantially during his period in local and national politics. The site was selected in October 2022, shortly after he became council leader, although the bid and community campaign predated him. He supported them rather than originating the project. The government subsequently committed £2.5 billion to fusion research and, in March 2026, announced a £200 million construction-partner contract for West Burton. The plant itself remained under design, with operations targeted for 2040. Naish helped maintain political support; the decisions and money belonged to ministers and the UK Atomic Energy Authority.

In Westminster, he helped rural Labour MPs press the government over inheritance-tax relief for farms. Ministers raised the qualifying-assets threshold from £1 million to £2.5 million after sustained pressure from farmers and Labour backbenchers. Naish deserves a share of the political credit, not sole authorship. He continued demanding that the tax be abolished, which the government refused.

His rural alliance was weakened in July 2026 when he said Labour had handled the policy badly but that farmers “didn’t help themselves with the tractors”. The comment suggested a politician comfortable negotiating limited concessions but impatient with the public campaigning that helped make them possible.

Naish has proved capable of electoral organisation, winning external funding and carrying a contested planning document to adoption. His weakness is conversion: much of his record consists of plans, allocated money and advocacy whose final outcomes remained elsewhere. He was an effective council-level political operator and a useful backbench organiser. The completed evidence does not yet establish him as a national policy-maker capable of delivering major change under his own authority.