Add spaces: Architect/Interiordesigner:HelmutHentrichandHPP-Architects

Answer: Architect/Interior designer: Helmut Hentrich and HPP - Architects

Add spaces: NoddyH,63yearsold,UnitedKingdom

Answer: NoddyH , 63 years old, United Kingdom

Add spaces: Later,Irenaeusmentioned21books(A.D.185).

Answer:
Later, Irenaeus mentioned 21 books (A.D. 185).