The power that gives the Parish Council the ability to make financial contributions to support the local Scouts comes from:
Local Government Act 1972
Section 137: Power of local authorities to incur expenditure for certain purposes not otherwise authorised.
(1) A local authority may, subject to the provisions of this section, incur expenditure which in their opinion is in the interests of, and will bring direct benefit to, their area or any part of it or all or some of its inhabitants, but a local authority shall not, by virtue of this subsection, incur any expenditure—
(a) for a purpose for which they are, either unconditionally or subject to any limitation or to the satisfaction of any condition, authorised or required to make any payment by or by virtue of any other enactment; nor
(b) unless the direct benefit accruing to their area or any part of it or to all or some of the inhabitants of their area will be commensurate with the expenditure to be incurred.
(4) The expenditure of a local authority under this section in any financial year shall not exceed the amount produced by multiplying—
(a) such sum as is for the time being appropriate to the authority under Schedule 12B to this Act (£7.86), by
(b) the relevant population of the authority’s area (639).