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mSv meaning

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What does mSv mean?
mSv (millisievert) is the unit commonly used in legal and regulatory practice to express a person’s ionising radiation dose, for setting and checking dose limits, risk assessments, dosimetry records and emergency planning. One millisievert equals one‑thousandth of a sievert (Sv) and reflects risk‑weighted dose to the body (effective or equivalent dose), rather than simple physical absorption. The unit is referenced in legislation and guidance across the UK and Ireland, including the Ionising Radiations Regulations 2017 (Great Britain), the Ionising Radiations Regulations (Northern Ireland) 2017, the Radiation (Emergency Preparedness and Public Information) Regulations 2019, and Ireland’s transposition of the EU Basic Safety Standards. It underpins regulatory concepts such as occupational exposure, public exposure, worker classification, dose constraints and investigation levels. Typical uses include: demonstrating compliance with worker and public dose limits; planning and optimising work with radioactive substances or generators; defining emergency exposure criteria; and communicating risk in healthcare and nuclear licensing contexts. Usage and meaning are broadly consistent across England & Wales, Scotland, Northern Ireland and Ireland. Practitioners will see mSv in HSE/ONR guidance, environmental permitting and licensing documents, radiological risk assessments, and personal or area monitoring reports.
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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
Property litigation round-up (England and Wales): key cases and developments—tenancies, rates, covenants, estoppel, mesne profits, occupiers’ liability; cladding remediation plan; UKSC portal; consultations—5 December 2024

In this issue: Repairing obligations and dilapidations Residential tenancies Business tenancies Rents and rates Easements and covenants Disputes and remedies Contractual issues Key developments and horizon scanning LexTalk®Property Disputes: a Lexis®Nexis community Additional Property disputes updates Daily and weekly news alerts New and updated content Dates for your diary Trackers New Q&As Repairing obligations and dilapidations Breach of occupiers’ liability duty of care due to inadequate motor racing barrier protective devices (Byrne v Motorsport Vision Racing Ltd) In Byrne v Motorsport Vision Racing Ltd [2024] EWHC 2966 (KB), His Honour Judge Blair KC, acting as a Deputy High Court Judge in a personal injury matter, held that the first defendant (MSVR), the second defendant (MSV), and the fourth defendant (MCRCB) had breached the duty of care owed to the claimant, a professional motorcycle racer injured during a test day for the British Superbike Championship. The court found a...

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PRACTICE NOTES
Electronic Communications Code (Schedule 3A, Communications Act 2003) case digest: UK Upper Tribunal and higher courts on imposition, terms, consideration, indemnities, costs, termination, modification, transitional provisions and notices (2018–2026)

This Practice Note outlines the principal features of judgments from the Upper Tribunal and higher courts under the Electronic Communications Code, contained in Schedule 3A to the Communications Act 2003, and identifies the relevant Code provisions together with the result in each matter. For further assistance on the Code, consult Practice Notes: The Electronic Communications Code—code rights and The Electronic Communications Code—terminating and renewing code rights. Imposing Code rights and agreements Case and Court/Tribunal Provisions of Code considered Decision Further details below Case and Court/Tribunal: Cornerstone v University of London [2018] UKUT 356 (LC)—Upper Tribunal (Lands Chamber) (UT) and University of London v Cornerstone [2019] EWCA Civ 2075—Court of Appeal Provisions of Code considered: Para 26 (interim Code rights) Decision: A short-term access permission to carry out a survey (known as a multi‑skilled visit or MSV) to evaluate a site’s suitability constitutes “works” and therefore a Code right. An application for interim Code rights under para 26 can be brought on its...

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