A non-disclosure agreement (NDA), often called a confidentiality agreement, is a contract used to protect confidential information disclosed for a defined purpose (for example, M&A due diligence, outsourcing, R&D, employment or settlement talks). The term is descriptive rather than statutory; enforceability rests on contract principles and the equitable/common-law duty of confidence, with broadly consistent approach across England & Wales, Scotland, Northern Ireland and Ireland. UK Trade Secrets (Enforcement, etc.) Regulations 2018 and Ireland’s European Union (Protection of Trade Secrets) Regulations 2018 provide additional remedies for trade secrets.Key features typically include:- Clear definition of “Confidential Information” and the permitted purpose.- Permitted recipients and safeguards; need-to-know and security measures.- Carve-outs (public domain, independently developed, already known, legally required disclosure).- Duration (finite for ordinary information; potentially indefinite for trade secrets).- Return/destruction, no-licence, and no-warranty clauses.- Governing law and jurisdiction.- Remedies: damages and urgent injunctive relief (interim injunction; interdict in Scotland; interlocutory injunction in Ireland), delivery up and account of profits.NDAs cannot lawfully prevent protected disclosures or reporting to regulators/law enforcement (e.g., UK whistleblowing law and Ireland’s Protected Disclosures regime). Overbreadth, ambiguity or unreasonable restraints risk unenforceability. Mutual and one‑way forms are common; choice depends on whether both parties disclose.

Valuable consideration describes something of economic value given in return for a promise or transfer, such as money, goods, services, release of a debt, or other “money’s worth”. In contract practice (England & Wales, Northern Ireland and Ireland), it underpins enforceability of simple contracts: consideration must be real (not illusory) though need not be adequate. “Natural love and affection” alone is not valuable consideration. In Scotland, contracts do not require consideration; the closest concept is an “onerous” (for value) as opposed to a gratuitous obligation, but the phrase is widely used in property and insolvency contexts.Across property law and equity in the UK and Ireland, the term distinguishes transfers “for value” from gifts. It is central to the bona fide purchaser for value without notice defence, to whether a disposition is voluntary, and to priority on registered land. In England & Wales, the Land Registration Act 2002 treats valuable consideration as money or money’s worth (not a gift), which affects priority under section 29. Similar usage appears in Northern Ireland and Ireland land registration legislation.Practically, identifying valuable consideration affects: contract validity; conveyancing priorities; whether notice binds; insolvency challenges (transactions at an undervalue); and tax/stamp duty analysis (distinct from “chargeable consideration”).

Alternative pleading describes the procedural practice of putting forward two or more different, and potentially inconsistent, factual or legal bases for a claim or defence, so that if one fails another may succeed. It allows a party to say, in effect, “if not A, then B”, without admitting either as definitively true at the outset.In England and Wales and Northern Ireland, the Civil Procedure Rules permit a party to advance inconsistent cases in the alternative, provided there is a proper factual foundation and the statements are made in good faith. Irish and Scots procedure follow the same broad approach, though the terminology and detailed rules differ (for example, averments in the alternative in Scotland).Alternative pleading is typically used where the claimant is unsure which legal characterisation (such as contract, tort/delict, misrepresentation, unjust enrichment) the court will prefer, or where the precise facts (e.g. formation of the contract, identity of the contracting party, or causation) are genuinely unclear pre-trial.Courts in all four jurisdictions will strike out abusive or speculative alternatives, but otherwise accept alternative pleading as a legitimate case‑management and litigation risk‑management tool.

Cost of completion describes the amount reasonably required to finish contractual works or services that have been left incomplete or defective, typically in construction, engineering and development disputes. It is used by courts in England and Wales, Scotland, Northern Ireland and Ireland as a measure of damages for breach of contract, rather than being a term defined in statute.Where a contractor fails to perform, the innocent party may claim the cost of engaging a replacement contractor to complete or rectify the works, subject to principles of remoteness, causation, mitigation and reasonableness. Courts may compare cost of completion with other measures of damages, such as diminution in value, and may refuse cost of completion where it would be disproportionate to the benefit obtained or inconsistent with the parties’ commercial expectations.In practice, cost of completion is commonly established by quantity surveyor or expert evidence, and may underpin claims for interim and final account adjustments, termination losses, and surety or performance bond calls. Usage and underlying principles are broadly consistent across the UK and Ireland, though applied within each jurisdiction’s contract and remedies framework.

A matrimonial property regime is a marriage regime which exists whether by law or by contract. It is often impossible in most civil law countries to consider succession law in isolation from matrimonial property law. A spouse may find that in moving from one country to another, he or she may gain a double protection (retaining marital rights and gaining succession law rights) or gain neither (having no matrimonial property rights at the outset and moving to a country which grants limited or no succession law rights).

But-for cause describes the basic factual causation test: would the claimant have suffered the damage but for the defendant’s act or breach? If not, the breach is a factual (but-for) cause; if the damage would have occurred anyway, causation fails.This is a case-law expression, not a statutory definition, and is used across negligence, clinical negligence, breach of statutory duty, delict (Scotland), contract damages, and some criminal law contexts. The claimant bears the burden on the balance of probabilities.Key features and limits:- Multiple causes: where the but-for test is too rigid, courts may accept material contribution to harm or disease, or treat concurrent causes cumulatively. Limited Fairchild/McGhee-type exceptions address material increase in risk.- Intervening acts (novus actus interveniens) can break the chain of causation.- Factual causation is distinct from legal causation/remoteness and scope of duty.- In contract, but-for analysis operates alongside remoteness and mitigation.Jurisdictions: England & Wales, Scotland and Northern Ireland apply broadly consistent common-law principles. Ireland is similar but has shown greater willingness to recognise loss-of-chance reasoning in medical negligence in some circumstances, whereas England & Wales generally reject loss of a chance for physical injury.

An exculpatory clause is a contractual provision by which one party seeks to exclude or limit liability for loss, damage or breach, often including negligence, and sometimes fiduciary or statutory duties. It is commonly found in commercial contracts, trust instruments, partnership and LLP agreements, and terms and conditions.Across England & Wales, Scotland, Northern Ireland and Ireland, such clauses are not automatically effective and are strictly construed by the courts. Their enforceability is constrained by statute (notably the Unfair Contract Terms Act 1977 in the UK, the Consumer Rights Act 2015, and the Irish Sale of Goods and Supply of Services Act 1980) and by common law rules on reasonableness, fairness, construction and public policy. Liability for death or personal injury caused by negligence generally cannot be excluded, and clauses purporting to exclude liability for fraud or dishonesty are usually void.“Exculpatory clause” is a descriptive term rather than a defined legislative concept; practitioners also refer to exemption, exclusion or limitation clauses. In Scottish law, similar principles apply through statutory controls and common law on unfair contract terms and fiduciary obligations. The practical focus is careful drafting, transparent risk allocation and evidence that any exclusion or limitation is reasonable and brought to the counterparty’s attention.

The doctrine of incorporation by reference describes the process by which a document, term or set of rules is treated as part of a contract, deed, will, company constitution or other legal instrument because it is clearly referred to, rather than physically set out in full. In practice, parties can “import” standard terms, technical specifications or procedural rules by identifying them with sufficient clarity, often by title, date, version or source.Across England and Wales, Scotland, Northern Ireland and Ireland, the concept is recognised mainly through case law and general principles of construction rather than a single statutory definition. Courts typically require: (i) clear wording showing an intention to incorporate; (ii) reasonable accessibility of the incorporated document at the time of the transaction; and (iii) consistency with mandatory statutory and common law controls (for example on unfair contract terms).The doctrine is frequently used in commercial contracts, construction contracts, financial documentation, corporate constitutions, trust instruments and testamentary dispositions. It reduces drafting length and promotes use of standard forms, but creates risks if referenced documents are ambiguous, changed without agreement, or not properly brought to the attention of the other party.

Extrinsic evidence is material used by a court that comes from outside the wording of a document or statute, to help interpret or apply it. It typically includes surrounding circumstances, background facts, prior negotiations, conduct of the parties, and industry practice, as opposed to the “four corners” of the written instrument itself. In contract law across England and Wales, Scotland, Northern Ireland and Ireland, extrinsic evidence is frequently considered when construing ambiguous terms, identifying the factual matrix, or implying terms, but is generally not admissible to contradict clear, unambiguous wording. The parol evidence rule and its recognised exceptions structure this analysis in common law jurisdictions. In statutory interpretation, UK and Irish courts may use extrinsic aids such as Hansard, Law Commission reports and explanatory notes, subject to principles developed in case law (for example Pepper v Hart in England and Wales). The concept is largely a descriptive one rather than a single codified definition, but it is embedded in evidence law, contract interpretation and construction of deeds, wills and commercial instruments throughout the UK and Ireland.

The concept that a female or male worker is entitled to equal pay for equal work when compared with the opposite sex.

Costs payable by one litigant to another litigant under the terms of an order made by the court.

A tariff is a schedule of fixed charges or rates, most commonly referring in legal practice to customs duties imposed on imported or exported goods. Lawyers encounter tariffs in customs, international trade, tax, regulatory and commercial contract work, where they affect pricing, supply chains and compliance obligations.In the UK (including England & Wales, Scotland and Northern Ireland), tariff structures for customs duties are primarily set out in statute and detailed regulations, historically under EU law and now under the UK’s independent customs and trade regime. In Ireland, tariffs are determined under EU customs law and the EU Common External Tariff. Northern Ireland is subject to specific post‑Brexit arrangements, including the Windsor Framework, which can result in different tariff treatment compared with Great Britain.“Tariff” is also used more broadly to describe structured price lists or standardised charges (for example, in utilities, transport and professional services), usually governed by contract, regulatory rules or sector‑specific legislation.In criminal law in the UK, “tariff” can colloquially describe the minimum custodial term before release on parole for certain life sentences, although formal terminology in statute and case law focuses on “minimum terms” rather than “tariffs”.