The Government Says

Referendums Relating to Council Tax Increases (Principles) (England) Report 2026 to 2027

Referendums Relating to Council Tax Increases (Principles) (England) Report 2026 to 2027
Local copy of Council_Tax_Referendum_Principles_Report_2026-27.pdf

https://www.gov.uk/government/publications/referendums-relating-to-council-tax-increases-principles-england-report-2026-to-2027

seen at 16:31, 9 February in Policy papers and consultations.