Jurisdiction(s):
United Kingdom

Related legal acts

Key definition

AC definition

What does AC mean? In practice, AC (access controller) describes the person, team or system that authorises and restricts access to premises, secure areas or IT systems, and manages user or visitor permissions. It is a descriptive term used across facilities, construction, events and information‑security contexts; it is not a defined term in UK or Irish legislation or case law and should not be confused with the “controller” in UK GDPR/EU GDPR. Key features typically include setting and operating access rules, screening entrants, issuing and revoking passes or credentials, keeping access logs, enforcing site or system policies, and coordinating with health and safety...

Guarantees and indemnities: key cases on characteristics, formalities, undue influence, guarantor rights, variations, co-guarantors and discharge

Published by a LexisNexis Banking & Finance expert

Practice notes

Case law on guarantees is both extensive and intricate. A firm grasp of the judicial principles is vital when drafting and negotiating guarantees. This Practice Note highlights key authorities and related material on guarantees. The cases are grouped by topic and include:

cases on the characteristics of guarantees
cases on the formalities to create a guarantee
cases on Undue influence when taking an individual’s guarantee
cases on guarantor rights
cases on guarantor protections and variation of the underlying Transaction
cases on the rights and obligations of co‑guarantors
cases on discharge or release of a guarantee

Key cases relating to the characteristics of guarantees

Names of Parties: Moschi v Lep Air [1972] 2 All ER 393
Judgment Date: 26 April 1972
Case Summary: Leading authority confirming the secondary nature of a guarantee. A guarantor’s liability is a secondary obligation, arising only if the principal fails to perform the obligations guaranteed.
Relevant content: See Practice Note: Guarantees—Characteristics of guarantees...

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Web page updated on 21/05/2026

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