(1) These regulations may be cited as the Social Security (Earnings Factor) Regulations 1979 and shall come into operation on 16th July 1979.
(2) In these regulations—
“ the Act ” means the Social Security Act 1975;
...
“ the Contributions Regulations ” means the Social Security (Contributions) Regulations 1979;
“ year ” means tax year;
and other expressions have the same meanings as in the Act.
(3) In these regulations references to contributions of any class are to contributions actually of that class notwithstanding that for the purposes of any benefit they may be treated as or be deemed to be contributions of another class.