plene.ai / Sources
Sources
Claims on this site carry a small link to their source. This page lists every source, what it supports, and when we last checked it. All were accessed on 28 September 2026. If a link breaks or a source changes, tell us at hello@plene.ai and we will update the page.
- Cabinet Office
Cabinet Office, Transforming Public Procurement, green paper CP 353, December 2020: the procurement regulations are described as particularly burdensome for small businesses; the paper led to the Procurement Act 2023.
https://assets.publishing.service.gov.uk/media/5fd77b11e90e076630958ecc/Transforming_public_procurement.pdf - gov.uk
Cabinet Office, Central Digital Platform factsheet: the enhanced Find a Tender service launched 24 February 2025 as the central digital platform for public procurement under the Procurement Act 2023.
https://www.gov.uk/government/publications/procurement-act-2023-short-guides/central-digital-platform-factsheet-html - gov.uk
Cabinet Office, Procurement Act 2023 short guides (notices, preliminary market engagement, frameworks, dynamic markets, MAT).
https://www.gov.uk/government/publications/procurement-act-2023-short-guides - Find a Tender
Find a Tender service: from 24 February 2025 above and below threshold notices for new UK procurements are published there, except below threshold in Scotland; procurements started earlier remain under PCR 2015.
https://www.find-tender.service.gov.uk/Search - Cabinet Office
Cabinet Office, Assessing and Monitoring the Economic and Financial Standing of Bidders and Suppliers, guidance note, May 2021 (standard financial ratios drawn from filed accounts, incl. turnover ratio and net asset value; use of credit reference agency reports; bidders should not be eliminated on turnover alone).
https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/987132/Assessing_and_monitoring_the_economic_and_financial_standing_of_suppliers_guidance_note_May_2021.pdf - gov.uk
Companies House, Late filing penalties: private companies and LLPs have 9 months from the period end; penalties £150 to £1,500, doubled if late two years running; not filing is a criminal offence.
https://www.gov.uk/government/publications/late-filing-penalties-from-companies-house/late-filing-penalties - gov.uk
Companies House, Annual accounts: corrections and amendments (amended accounts are filed alongside, not in place of, the original).
https://www.gov.uk/annual-accounts/corrections-and-amendments - Companies House
Companies House register: filed accounts, filing history, charges, officers and persons with significant control are public.
https://find-and-update.company-information.service.gov.uk/ - gov.uk
gov.uk, Set up as a sole trader: sole traders report through Self Assessment and do not file accounts at Companies House.
https://www.gov.uk/set-up-sole-trader - ICO
ICO, Data protection fee: who must pay, tiers and exemptions.
https://ico.org.uk/for-organisations/data-protection-fee/ - ICO
ICO, Guide to UK GDPR, Right to be informed (Articles 13 and 14): what you must tell people when you collect their data, including call transcripts.
https://ico.org.uk/for-organisations/uk-gdpr-guidance-and-resources/individual-rights/individual-rights/right-to-be-informed/ - ICO
ICO, Guide to PECR, Electronic and telephone marketing: rules for marketing emails, the corporate subscriber position, and the requirement to offer an opt-out.
https://ico.org.uk/for-organisations/direct-marketing-and-privacy-and-electronic-communications/guide-to-pecr/electronic-and-telephone-marketing/ - ICO
ICO, Guide to PECR, Cookies and similar technologies: consent is required before setting non-essential cookies such as analytics.
https://ico.org.uk/for-organisations/direct-marketing-and-privacy-and-electronic-communications/guide-to-pecr/cookies-and-similar-technologies/ - ICO
ICO, Guide to UK GDPR, Individual rights: access, rectification, erasure, restriction, portability, objection; respond within one month.
https://ico.org.uk/for-organisations/uk-gdpr-guidance-and-resources/individual-rights/individual-rights/ - ICO
ICO, Guide to UK GDPR, Rights related to automated decision-making including profiling (Article 22).
https://ico.org.uk/for-organisations/uk-gdpr-guidance-and-resources/individual-rights/individual-rights/rights-related-to-automated-decision-making-including-profiling/ - ICO
ICO, Make a complaint.
https://ico.org.uk/make-a-complaint/ - ICO
ICO, International transfers: UK IDTA, UK Addendum and the UK Extension to the EU-US Data Privacy Framework.
https://ico.org.uk/for-organisations/uk-gdpr-guidance-and-resources/international-transfers/ - Google
Google Analytics Help, Data retention: event-level data can be kept for 2 or 14 months (up to 50 months on GA360).
https://support.google.com/analytics/answer/7667196 - Google
Google, How Google uses cookies: _ga cookies used by Google Analytics.
https://policies.google.com/technologies/cookies - EU AI Act
EU Artificial Intelligence Act, Article 50: people must be informed when they interact with an AI system; applies from 2 August 2026.
https://ai-act-service-desk.ec.europa.eu/en/ai-act/article-50 - legislation.gov.uk
The Conduct of Employment Agencies and Employment Businesses Regulations 2003, which govern work-finding services in Great Britain and are enforced by the Employment Agency Standards Inspectorate.
https://www.legislation.gov.uk/uksi/2003/3319/contents - gov.uk
Employment Agency Standards Inspectorate: the regulator for employment agencies and employment businesses in Great Britain.
https://www.gov.uk/government/organisations/employment-agency-standards-inspectorate - W3C
W3C, Web Content Accessibility Guidelines (WCAG) 2.2.
https://www.w3.org/TR/WCAG22/ - legislation.gov.uk
The Public Sector Bodies (Websites and Mobile Applications) (No. 2) Accessibility Regulations 2018.
https://www.legislation.gov.uk/uksi/2018/952/contents - EASS
Equality Advisory and Support Service.
https://www.equalityadvisoryservice.com/
Primary sources (government, regulators, legislation, the standards body) are preferred. Where a secondary source is used it is labelled with the publisher's name. Claims about our own reports are not cited; the method page prints every rule and weight, and describes the worked examples the charts come from.
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