Gas Safety Act 2000

A gas appliance is an approved type A gas appliance if the appliance—

is approved—

under a corresponding law; or

under a regulation; and

complies with any safety standard that applies to the appliance as a condition of that approval; and

is used for a purpose for which it has been approved; and

is not an appliance that has been declared a prohibited appliance under section 27.

A gas appliance ceases to be an approved type A gas appliance if the construction occupations registrar is satisfied that—

under a corresponding law, appliances of that kind have been found unsafe to use or to not comply with a safety standard; or

the appliance is prohibited under section 27; or

a direction under section 29 (2) (Directions about unsafe gas appliances) is in force in relation to the appliance; or

the appliance has been refused approval under a corresponding law; or

the appliance ceases to be approved under a corresponding law.