(b) to the need for ensuring that the best practicable means are employed to minimise noise; (c) before specifying any particular methods or plant or machinery, to the desirability in the interests of any recipients of the notice in question of specifying other methods or plant or machinery which would be substantially as effective in minimising noise and more acceptable to them; (d) to the need to protect any persons in the locality in which the premises in question are situated from the effects of noise. (5) A notice under this section shall be served on the person who appears to the local authority to be carrying out, or going to carry out, the works, and on such other persons appearing to the local authority to be responsible for, or to have control over, the carrying out of the works as the local authority thinks fit. (6) A notice under this section may specify the time within which the notice is to be complied with, and may require the execution of such works, and the taking of such other steps, as may be necessary for the purpose of the notice, or as may be specified in the notice. (7) A person served with a notice under this section may appeal against the notice to a magistrates' court within twenty one days from the service of the notice. (8) If a person on whom a notice is served under this section without reasonable excuse contravenes any requirement of the notice he