The Government Says

Political party spending limits: independent assessment (29 August 2026)

Political party spending limits: independent assessment (29 August 2026)
Local copy of Letter_to_Electoral_Commission_spending_limits_review_29_August_2026.pdf

https://www.gov.uk/government/publications/political-party-spending-limits-independent-assessment-29-august-2026

seen at 14:58, 1 September in News and communications.