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Call for evidence outcome

Unrefined liquid dextrose ultrafiltration retentate (ULDUR): double reward classification

Updates to this page

From:
Department for Transport
Published:
13 March 2025
Last updated:
15 August 2025
Show all updates

  1. Outcome added.

  2. Call for evidence closure date corrected to 11:59pm 8 May 2025.

  3. First published.

This was published under the 2024 to 2026 Starmer Labour government
This call for evidence has closed

Detail of outcome

Responses to the call for evidence on unrefined liquid dextrose ultrafiltration retentate (ULDUR) were mixed as to whether to change the classification.

Several responses were not supported by clear evidence. Where the evidence received was inconclusive, we will write to respondents to seek further evidence.

Original call for evidence

Summary

Reviewing whether ULDUR should continue to be a double counted waste under the Renewable Transport Fuel Obligation (RTFO).

This call for evidence ran from
to

Call for evidence description

Seeks views and evidence on whether unrefined liquid dextrose ultrafiltration retentate (ULDUR) remains collectively classified as meeting the criteria for double reward classification in the RTFO.

The outcome of this call for evidence will affect:

  • obligated fossil fuel suppliers
  • eligible low carbon fuel suppliers
  • verification bodies acting on the behalf of suppliers
  • trade associations and other interested parties

Documents

Reviewing double reward classification of unrefined liquid dextrose ultrafiltration retentate (ULDUR)

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