More than 50 leading businesses have signed a letter to the UK government demanding publication of the delayed Circular Economy Growth Plan, according to Green Alliance, the environmental think tank coordinating the call.

The plan, which the government has committed to producing as part of its industrial and resource strategy, has slipped past its expected timetable. The coalition of companies argues the continued delay leaves investors, waste operators and manufacturers unable to plan capital expenditure around future resource policy.

Green Alliance, which organised the letter, says the signatories span major UK businesses whose operations depend on predictable rules for material recovery, recycled content and waste infrastructure. Their central message is straightforward: the policy framework exists in outline, but without a published document and a firm timetable, the private sector cannot build against it.

What the plan is supposed to do

The Circular Economy Growth Plan is intended to set out how the UK will capture economic value from material streams that currently leak to landfill, export or energy recovery. For the recycling and waste sector, it is the policy instrument expected to clarify demand-side measures — including potential recycled content requirements, eco-design rules and public procurement standards — that would underpin long-term offtake markets for recovered commodities.

Industry has consistently argued that collection-side reform alone, including the simplified waste and resources reforms already in motion, cannot deliver investment in reprocessing capacity without matched demand signals. The delayed plan is where those signals are supposed to come from.

Why the delay matters to operators

For processors and investors, an unpublished strategy is not a neutral state. Plants sized against future recycled-content mandates, sorting upgrades tied to kerbside consistency rules, and packaging redesign programmes all sit on hold or proceed at risk while the plan remains in Whitehall.

The business signatories make the case that circular economy policy is growth policy: material efficiency, remanufacturing and domestic reprocessing capacity all represent capital projects that can be sanctioned only against a known regulatory baseline. Every quarter of delay pushes final investment decisions further out.

Green Alliance's decision to take the coalition public signals frustration within the business community has reached the point where private engagement has failed to move the timetable. A coordinated letter from more than 50 companies — a breadth of signatory base unusual for a single policy document — is designed to make the political cost of further slippage visible inside government.

The milestone to watch

The immediate question is a date. The government has not yet published the plan or confirmed a revised deadline, and the business coalition wants both. Until the document lands, the sectors it covers — packaging, construction materials, textiles, electronics and food waste among them — are operating on reforms legislated piecemeal rather than a coherent growth framework.

The next decisive moment is the government's response to the letter: either a firm publication date for the Circular Economy Growth Plan or continued silence. That answer will determine whether the investment case for UK circular infrastructure firms up this year or drifts into the next spending cycle.