Regulation 11

for the purposes of F1regulations 3(6)(a)(i)(aa), 3(6)(b)(i)(aa), 4A(6)(a)(i), or 4A(6)(b)(i) (principal photography), by reference to the number of days spent on the work;

for the purposes of the rest of F2regulations 3(6), 4(6) and 4A(6) (where work carried out), by reference to the amount of expenditure on the work.