A fire and rescue authority (the first authority) may enter into arrangements with—
another fire and rescue authority, or
any other person,
for the discharge to any extent by that other authority or person of a function conferred on the first authority under any of sections 6 to 9 and 11.
But a fire and rescue authority may enter into arrangements with a person under subsection (1) in relation to its function of extinguishing fires only if the person employs fire-fighters.
Arrangements under this section may include provision as to the terms on which any function is to be discharged (including provision as to payment).