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Ion meaning

Published by a LexisNexis Energy expert
What does Ion mean?
In legal and regulatory documents, ion is a scientific term describing an atom or molecule that carries a net electrical charge because it has lost or gained electrons. Positively charged ions are cations; negatively charged ions are anions. The concept commonly appears in environmental permitting and water/wastewater consents (for example, limits on ionic species such as nitrate, phosphate or chloride, and conductivity), waste and pollution control, technical schedules, expert reports, and contract specifications for ion exchange, ion chromatography and corrosion prevention. It is also relevant to product stewardship, waste management and carriage of dangerous goods for lithium‑ion batteries. Ion is not generally defined in UK or Irish legislation; it is a descriptive scientific expression used across multiple legal contexts. Related defined terms include ionising radiation (for example, in the GB Ionising Radiations Regulations 2017 and in Irish basic safety standards regulations) and lithium ion batteries under dangerous goods transport instruments (such as ADR and IATA). Usage and meaning are consistent across England & Wales, Scotland, Northern Ireland and Ireland, subject to any instrument‑specific definitions that apply in context.
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NEWS
Property disputes weekly highlights: proprietary estoppel remedy; telecoms Code MSV costs and eligibility; protest injunction upheld; NDR mitigation schemes ineffective; HMLR Practice Guides updated; UORR ban warning 25 September 2025

In this issue: Key developments and horizon scanning Disputes and remedies Trespass and adverse possession Electronic communications Disputes and remedies Rent and rates Additional Property Disputes updates Daily and weekly news alerts New and updated content Dates for your diary Key developments and horizon scanning BPF director warns of commercial impact from Devolution Bill's rent review ban Policy lead at the British Property Federation (BPF), Ion Fletcher, has voiced reservations about the English Devolution and Community Empowerment Bill’s proposed prohibition on upward-only rent reviews (UORRs) in commercial leases. Whilst recognising the Bill’s broader aim to devolve powers to regional authorities and enhance local development outcomes, Fletcher cautions that the late addition of the UORR ban—without consultation—could weaken investor confidence. UORRs are widely used in longer commercial leases, providing income certainty that can de-risk development and refurbishment activity. Fletcher maintains that discarding this device breeds uncertainty at a moment when the sector is already...

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NEWS
UK property law weekly: rent review ban, proprietary estoppel remedy, Electronic Communications Code rights and MSV costs, business rates avoidance schemes, Register of Overseas Entities, HMLR, Scottish infrastructure finance

In this issue Key developments and horizon scanning Transferring property Leasing property Property taxes Property in Scotland Additional property updates this week Daily and weekly news alerts Trackers Key developments and horizon scanning BPF flags commercial risks from proposed ban on upward-only rent reviews Ion Fletcher, policy director at the British Property Federation, has raised alarms about the English Devolution and Community Empowerment Bill’s move to outlaw upward-only rent reviews in commercial leases. Although he recognises the Bill’s wider goal of handing powers to regional authorities and improving local development outcomes, he cautions that inserting this prohibition at short notice—without consultation—could dent investor confidence. See: LNB News 23/09/2025 34. Source: BPF - BPF Spotlight Series: English Devolution and Community Empowerment Bill. Government unveils 'Pride in Place' programme to bolster communities The Ministry of Housing, Communities and Local Government (MHCLG) has introduced the 'Pride in Place' programme, aiming to equip communities with new tools...

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NEWS
UK Product Regulation and Metrology Act 2025: enabling powers, online marketplace obligations, EU alignment/divergence, and upcoming product safety and liability reforms

What is the purpose of PRMA 2025? PRMA 2025 obtained Royal Assent on 21 July 2025 and, apart from PRMA 2025, s 11(1) and (3), took effect that same day. As enabling legislation, it empowers the Secretary of State to make regulations to manage a wide spectrum of product safety risks and associated matters. On 22 July 2025, the Office of Product Safety and Standards (‘OPSS’) issued a companion Code of Conduct that explains how government will exercise the powers granted under PRMA 2025. Why has PRMA 2025 been introduced? For years the UK’s product safety regime was shaped strongly by EU legislation. In the wake of Brexit, there was an increasing need for a distinct UK framework capable of evolving independently. At the same time, new hazards have appeared that the previous laws were not designed to deal with, including unsafe goods sold via online marketplaces, e-bikes and e-scooters with lithium-ion batteries, and AI-enabled products. As early as March 2021, OPSS began a call for evidence...

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View the related Practice Notes about Ion

PRACTICE NOTES
Cryptoassets and UK tax: situs for CGT and IHT under common law, contrasting HMRC guidance, key cases on residence, and tokenised asset considerations

STOP PRESS: The Property (Digital Assets etc) Act 2025 received Royal Assent on 2 December 2025 and took effect that same day. Section 1 confirms that an item (including one that is digital or electronic in nature) is not disqualified from being the subject of personal property rights simply because it is neither a thing in possession nor a thing in action. This clarifies that digital holdings including cryptocurrency, non-fungible tokens and carbon credits can now be recognised as personal property. See LNB: 04/12/2025 2. STOP PRESS: Abolition of non-dom regime and introduction of residence-based IHT regime Finance Act 2025 (FA 2025), which obtained Royal Assent on 20 March 2025, enacts the abolition of the remittance basis of taxation and replaces it with a residence-based regime from 6 April 2025. FA 2025 also removes domicile as the primary determinant of liability to inheritance tax. Further measures include revising the rules for excluded property status, ending the protected settlements status of offshore trusts, and alterations to overseas workday...

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PRACTICE NOTES
Third party debt orders: frequently asked questions on scope, process, and special assets (crypto, pensions, funds in court) under CPR Part 72 (England and Wales)

This Practice Note addresses several frequently asked questions that may arise when deciding whether to pursue a Third Party Debt Order (TPDO). For guidance on what a TPDO is and the steps to obtain one, see Practice Notes: What is a third party debt order (TPDO)? How to apply for a third party debt order (TPDO) Does a TPDO have to be issued against a financial institution? No. You can apply for a TPDO against any third party within the jurisdiction that owes money to your debtor. This extends to an individual who is a debtor of the judgment debtor. Can a TPDO be made in respect of cryptocurrency? Following the decision in Ion Science Ltd v Persons Unknown (2020) (not reported by LexisNexis), the High Court confirmed that crypto assets are capable of being treated as property and can be traced and enforced against, including via an application for a TPDO. For guidance, see News Analysis: First third-party debt...

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PRACTICE NOTES
UK regulation of e‑cigarettes and vapour products: post‑Brexit framework, TRPR compliance, MHRA notifications, advertising restrictions, cross‑border sales, medicinal and device pathways, and 2025 disposable vape ban

This Practice Note offers guidance on the EU regulatory landscape and the developing UK framework for vapour products and e‑cigarettes in the wake of Brexit and after IP completion day (eg 31 December 2020, the close of the Brexit implementation period). What are vapour products? Under EU and UK law, vapour products (often referred to as ‘e‑cigarettes’ or ‘e‑cigs’, ‘vapourisers’ or ‘vapes’) are characterised as products that can generate an inhalable aerosol containing an active ingredient, typically nicotine or a cannabinoid (CBD), through a mouth piece. Vapour products function by heating a solution (e‑liquid) that generally contains nicotine, propylene glycol and/or vegetable glycerine, flavourings, and the active ingredient (eg nicotine, CBD). E‑cigarettes do not contain tobacco (ie leaves and other natural processed or unprocessed parts of tobacco plants), and do not burn or produce the products of combustion associated with smoking, including carbon monoxide and ‘tar’. They are separate from both ‘tobacco products’ and ‘herbal products for smoking’ (which are products based on plants, herbs or fruits which...

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