Owners and landlords across SA1–SA7 ask about this in roughly equal numbers, for slightly different reasons. On this stock the sensible answer is metal-clad 18th Edition CU sized to the sub-main — matched to the wiring generation, not a lift-and-shift from a new-build brochure. Swansea sits inside the area we work daily, so a follow-up visit is not a logistical problem if one is needed. If it turns out not to apply here, you will be told that plainly.
On a period flat, freeholder or managing-agent consent almost always required for cu work — that's what the quote should reflect. We work to the current edition of BS 7671 and note where an older installation departs from it and why that matters. Around Swansea Council that is a familiar finding rather than an alarming one. Searching "full property rewires period flat Swansea" from a Swansea address usually means you want a straight answer before you want a salesperson.
