12. In determining the total time spent in exercising official controls, any time spent by an inspector—
(a)travelling to or from premises at which the inspector exercises official controls and for which he or she is paid under a contract of employment or contract for services;
(b)at any premises to which the inspector has gone for the purpose of exercising official controls and for which he or she is paid under a contract of employment or contract for services (regardless of whether or not the inspector is able to exercise official controls there); and
(c)at any other place—
(i)when the inspector is available for exercising official controls but is not in fact exercising any, and
(ii)for which he or she is paid under his or her contract of employment or contract for services,
must be counted as if it were time when the inspector was exercising official controls.