80Certificates about payment
In any proceedings a certificate—
(a)that payment of a fixed penalty was or was not received, by a date specified in the certificate, by the fixed penalty clerk, or
(b)that a letter containing an amount sent by post in payment of a fixed penalty was marked as posted on a date so specified,
shall, if the certificate purports to be signed by the fixed penalty clerk, be evidence (and, in Scotland, sufficient evidence) of the facts stated.