
The grey fleet refers to privately owned vehicles that employees use for work-related journeys.
These vehicles are not owned or leased by the company but are still used to carry out business tasks, such as visiting clients or attending meetings.
Although they are privately owned, employers have a legal responsibility to ensure they are safe, roadworthy and properly insured for business use.
Grey fleet vehicles can range from small cars to vans, depending on the nature of the work.

Grey fleet use is common in organisations where staff are not assigned a company vehicle.
Typical scenarios include salespeople driving their own cars to client sites, engineers travelling between jobs or managers attending external meetings.
It can also occur when employees occasionally use their vehicles for business trips instead of public transport or rental cars.

Employers have a duty of care under health and safety legislation to ensure that grey fleet vehicles are safe and that drivers are competent.
This includes verifying MOT certificates, insurance policies and driving licences.
Failure to meet these responsibilities can result in legal consequences, fines and reputational damage if an incident occurs during a work-related journey.

Employees using their own vehicle for business must have the correct level of insurance, usually referred to as Class 1 Business Use.
Standard personal car insurance does not typically cover work journeys beyond commuting.
Employers should check insurance documents regularly to ensure they are valid and appropriate for the work being undertaken.

Regular safety checks are essential for grey fleet vehicles. Employers should request evidence of annual MOTs, vehicle servicing and tyre condition.
Some organisations provide checklists for employees to complete before undertaking business journeys. These checks reduce the risk of breakdowns or accidents and help maintain compliance with safety regulations.

Accurately recording mileage is important for both expense reimbursement and compliance purposes.
Fleet management software or mileage tracking apps can be used to verify distances travelled and ensure that expense claims are correct.
This also helps businesses monitor how frequently grey fleet vehicles are used and the associated costs.

Grey fleet vehicles are often older and less fuel-efficient than company-owned cars, leading to higher emissions.
Businesses concerned about sustainability may encourage alternatives such as public transport, carpooling or short-term hire of more fuel-efficient vehicles.
Monitoring mileage and emissions from grey fleet use can help identify opportunities for greener travel policies.

Technology can help manage grey fleet risks and costs.
GPS tracking apps allow journey verification, while document management systems make it easy to store and check insurance and MOT records.
Expense management software can integrate with mileage logs, reducing administrative work and preventing errors.

Grey fleet use carries risks, including accidents, legal non-compliance and reputational damage.
Employers should implement a clear policy outlining driver responsibilities, insurance requirements and safety procedures.
Regular audits and training help ensure compliance and reduce liability.
Proactive risk management also demonstrates a commitment to employee welfare.
A formal grey fleet policy provides clear guidelines for both employers and employees.
It should cover eligibility, insurance requirements, safety checks, mileage claims and environmental considerations.
Having a written policy ensures consistency, reduces misunderstandings and helps the organisation meet its legal and ethical responsibilities when employees use their own vehicles for work.