Committee publication · Correspondence · 3 July 2026

Correspondence from the Chair to the Secretary of State relating to the Defence Investment Plan, dated 3 July 2026

From: Energy Security and Net Zero Committee

Summary

The Chair of the Energy Security and Net Zero Committee writes to the Secretary of State expressing concern that the Defence Investment Plan uses DESNZ budget cuts as funding without clarity on impact. The committee seeks urgent detail on which policies will be dropped or delayed, and whether Defence Investment Plan projects will support engineering supply chains critical to long-term energy and defence security.

Key findings

  • The Defence Investment Plan has identified DESNZ capital expenditure reductions as a potential funding source, with only a flat percentage target announced and no detail on delivery impact.
  • The committee warns that lack of policy certainty is itself a major threat to energy investment and infrastructure development timescales.
  • No clarity provided on which DESNZ priorities, policies, or projects will be affected by the budget cuts.
  • Committee questions whether Defence Investment Plan projects will support high-quality engineering supply chains, particularly in the North East of Scotland, to build skills for both national defence and energy security.

Tone

Critical

Topics

public-financeenergy-securitydefence-investmentinfrastructure

Key actors

Bill Esterson, Ed Miliband, Energy Security and Net Zero Committee, Department for Energy Security and Net Zero (DESNZ)

Notable line

The lack of detail in the announcement maximises uncertainty and implies a lack of clear planning.

Key Quotes

… a core foundation of national security is delivering safe, secure energy supplies to homes and businesses
Bill Esterson · establishing why DESNZ budget cuts matter to defence
… one of the biggest threats to energy investment is doubts around the certainty of government policy
Bill Esterson · explaining the committee's concern about the flat percentage target
The lack of detail in the announcement maximises uncertainty and implies a lack of clear planning.
Bill Esterson · core criticism of the Defence Investment Plan announcement
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Source · parliament.uk record ↗