5. For the purpose of section 72 of the Friendly Societies Act 1974 (power of registered friendly society to insure life of parent or grandparent for not more than £30) there shall be excluded so much of any sum insured to be paid, or paid, on the death of any one of a person's parents or grandparents as represents any increase in any sum assured or guaranteed which is effected under regulation 5 or 6 of the 1977 Regulations and amended under regulation 5 or 7.