Unfair Contract Terms Act 1977: Key legislation that restricts the extent to which liability for negligence can be excluded. Subjects exclusions of liability to a 'reasonableness test'. Fundamental for determining what can and cannot be excluded in a waiver.

Consumer Rights Act 2015: Governs consumer contracts and requires transparency and prominence of terms. Particularly relevant if the waiver is for consumer sports activities. Contains specific provisions about unfair terms in consumer contracts.

Occupiers' Liability Acts 1957 and 1984: Establishes duty of care for premises owners and operators. Essential consideration for sports facilities and venues where activities take place.

Health and Safety at Work Act 1974: Applicable if the sports activity is part of a business operation. Importantly prohibits the exclusion of liability for death or personal injury caused by negligence.

Common Law Principles: Includes crucial doctrines such as 'volenti non fit injuria' (voluntary assumption of risk), negligence principles, and reasonable foreseeability of harm.

The Requirements of Writing (Scotland) Act 1995: While primarily for Scotland, may be relevant for cross-border activities affecting England and Wales.

Data Protection Act 2018 and UK GDPR: Relevant when collecting and processing personal information as part of the waiver process. Ensures compliance with data protection requirements.