The Parish Council’s power to hold events comes from:
The Local Government Act 1972
Section 145: Provision of entertainments.
(1) A local authority may do, or arrange for the doing of, or contribute towards the expenses of the doing of, anything (whether inside or outside their area) necessary or expedient for any of the following purposes, that is to say—
(a) the provision of an entertainment of any nature or of facilities for dancing;
(b) the provision of a theatre, concert hall, dance hall or other premises suitable for the giving of entertainments or the holding of dances;
(c) the maintenance of a band or orchestra;
(d) the development and improvement of the knowledge, understanding and practice of the arts and the crafts which serve the arts;
(e) any purpose incidental to the matters aforesaid, including the provision of refreshments or programmes and the advertising of any entertainment given or dance or exhibition of arts or crafts held by them.
(2) Without prejudice to the generality of the provisions of subsection (1) above, a local authority—
(a) may for the purposes therein specified enclose or set apart any part of a park or pleasure ground belonging to the authority or under their control;
(b) may permit any theatre, concert hall, dance hall or other premises provided by them for the purposes of subsection (1) above and any part of a park or pleasure ground enclosed or set apart as aforesaid to be used by any other person, on such terms as to payment or otherwise as the authority think fit, and may authorise that other person to make charges for admission thereto;
(c) may themselves make charges for admission to any entertainment given or dance or exhibition of arts or crafts held by them and for any refreshment or programmes supplied thereat.