(1)Regulations made under section 48 as to conditions of service may in particular make provision about—
(a)pay, allowances and expenses,
(b)public holidays and leave,
(c)the issue, use and return of police clothing and equipment.
(2)In relation to special constables, such regulations must not entitle them to pay but may make provision entitling them to receive periodic payments in acknowledgment of the giving of services (including provision about the minimum aggregate length of service needed within a period in order to give rise to an entitlement to receive a periodic payment in respect of that period).
(3)Regulations made under section 48—
(a)may make retrospective provision about pay or allowances, but
(b)must not retrospectively reduce any pay or allowance payable to or in respect of any person.