Head protection is vital. Should you fall off your ATV, it is the only protection you will have. There is no law to say that you must wear a helmet if riding your own ATV on your own land, however you are taking un-necessary risks every time you do so. Employers must ensure that their employees wear appropriate safety equipment at all times. Other safety clothing is optional, depending on your activity.
Strong boots are always a good idea, as well as gloves.
Sports users in particular should wear goggles to protect their eyes from flying dirt, and body armour is highly recommended. Under the Health and Safety at Work Act 1974, an employer must provide 'such instruction, training and supervision as is necessary to ensure, so far as is reasonably practicable, the health and safety of his employees'. The same requirements apply to the self-employed. ATV Engineering arranges training courses for both utility and sports ATVs. Training courses for Utility ATV's are provided by Lantra, while sports quad training is provided by the Scottish Auto-Cycle Union.