Same-week data release mixes accredited and experimental statistical labels

The Office of Rail and Road published quarterly punctuality and reliability figures for April to June 2026 [1], annual rail infrastructure and asset data for 2025/26 [9], annual passenger complaint figures [10], and periodic counts of Disabled Persons Railcards and assisted journeys [11]. The Department for Transport, whose statistics catalogue covers the transport system across the United Kingdom [2], published provisional 2026 fuel-supply data under the Renewable Transport Fuel Obligation and the Sustainable Aviation Fuel Mandate [3][4]. The Insolvency Service published company and individual insolvency figures for August 2026 [7][8]. The Planning Inspectorate announced two forthcoming experimental releases on ministerial measures, one for 11 February 2027 and one for 18 February 2027 [5][6].

The pattern that emerges from reading the releases together is one of different statistical statuses. The rail performance, infrastructure, complaints and insolvency figures are badged as accredited official statistics [1][9][10][7][8]. The railcard and fuel-supply figures are described as official statistics [11][3][4]. The Planning Inspectorate releases are classed as 'Official Statistics Under Development' [5][6]. Users comparing transport reliability, fuel decarbonisation and planning speed are therefore drawing on indicators at different stages of maturity.