A8 Subject to any express provisions to the contrary and the provisions of regulation A5—
Part A (Interpretation and general)
In Part B (Materials and workmanship) regulation B2
Part E (Fire safety)
In Part F (Conservation of fuel and power) regulations F3 and F4
Part K (Ventilation)
In Part L (Heat-producing appliances and liquified petroleum gas installations) regulations L2(1), L3 and L4
Part N (Drainage)
Part P (Sanitary appliances and unvented hot water storage systems)
shall apply to the provision of any service and fitting (whether by way of new work, alteration or replacement) to which any of those Parts respectively relate.