The Act Commentary on Sections Part 7: Noise Section 74 Amount of fixed penalty
203.Section 74 (subsections (2)  and (3)) enables a local authority to specify the amount of a fixed penalty for an offence committed in its area. Where no amount is set by a local authority, the penalty amount is £75. In either case, a local authority may treat a penalty as having been paid if a lesser amount is paid before the end of such (shorter) period as it may specify.
204.Subsections (4) and (5) give power to the Secretary of State or the National Assembly for Wales (as appropriate) to make regulations governing the power of local authorities to set local fixed penalty rates (e.g. by specifying a range within which the amount must fall or limiting the extent and circumstances in respect of which a local authority may provide for reduced early payment).