Owners and landlords across NP10–NP20 ask about this in roughly equal numbers, for slightly different reasons. We work to the current edition of BS 7671 and note where an older installation departs from it and why that matters. You will get the plain version, not the technical one, unless you ask.
People often expect the worst outcome. In practice, most Newport visits of this kind end with a defined, limited piece of work. Same-week for standard scope, planned is the part worth confirming rather than assuming. Searching "consumer unit upgrades for new-build owners Newport" from a Newport address usually means you want a straight answer before you want a salesperson.



