Town and Country Planning Act 1990: Primary legislation governing Tree Preservation Orders (TPOs) and protected trees in England and Wales. Requires specific permissions for work on protected trees.

Conservation of Habitats and Species Regulations 2017: Protects certain species and their habitats, including those that might be affected by tree removal operations.

Wildlife and Countryside Act 1981: Provides protection for wildlife, particularly nesting birds, which must be considered during tree removal operations.

Health and Safety at Work Act 1974: Sets out the general duties employers have towards employees and members of the public during tree removal work.

Work at Height Regulations 2005: Governs safety requirements for working at height during tree removal operations.

Provision and Use of Work Equipment Regulations 1998: Regulates the use of equipment and machinery in tree removal operations, ensuring it's suitable and properly maintained.

Personal Protective Equipment at Work Regulations 1992: Specifies requirements for protective equipment that must be used during tree removal work.

Environmental Protection Act 1990: Covers waste management and disposal requirements for tree removal operations.

Control of Pollution Act 1974: Regulates noise and other forms of pollution that might arise from tree removal work.

Environment Act 2021: Latest environmental legislation affecting tree work and environmental protection measures.

British Standard 3998:2010: Technical standards and recommendations for tree work operations.

British Standard 5837:2012: Guidelines for trees in relation to design, demolition and construction activities.

Consumer Rights Act 2015: Governs contracts between businesses and consumers, including rights and obligations in service contracts.

Supply of Goods and Services Act 1982: Sets out implied terms in contracts for the supply of services, including quality and reasonable care and skill.

Unfair Contract Terms Act 1977: Regulates terms that exclude or restrict liability in contracts, particularly important for liability provisions.

Employers' Liability (Compulsory Insurance) Act 1969: Requires employers to maintain insurance against liability for injury or disease to their employees.

Local Authority Requirements: Various local planning regulations, conservation area restrictions, and specific tree protection policies that vary by jurisdiction.