When to use a professional
Start with the nation, circuit and location before assuming a familiar household electrical job is DIY work.
Quick answer
There is no single UK-wide Part P answer. England, Wales, Scotland and Northern Ireland use different building-control frameworks, and the circuit, location and scope can change notification, certification and competence requirements.
Scope: Use the nation-specific building rules and a competent registered electrician where work is notifiable, fixed-wiring work or otherwise beyond safe user checks.
Four options to compare
Best for: Choosing or checking a complete appliance, extension or plug-in device without altering fixed wiring.
Main trade-off: Product condition, load, socket suitability and manufacturer instructions still matter.
Must check: No fixed-wiring change; exact product marking, recall status and connected load.
Best for: A narrowly defined task that the current rules and competent guidance clearly allow in your nation and location.
Main trade-off: “Like for like” does not override unsafe circuits, special locations or evidence of damage.
Must check: Nation, circuit, location, isolation, competence and certification record.
Best for: New circuits, extensions, consumer-unit work or other changes to the electrical installation.
Main trade-off: Notification and certification routes differ and DIY completion can create safety and property-sale problems.
Must check: Use the nation-specific building-control and competent-person route before work starts.
Best for: Bathrooms, outdoors, signs of overheating, old wiring, conflicting circuits or any uncertainty.
Main trade-off: Requires competent assessment before a shopping list is useful.
Must check: Stop using affected equipment where appropriate and obtain an electrician’s assessment.
Approved Document P covers England; Wales publishes its own document; Scotland uses its technical handbooks; Northern Ireland uses Technical Booklets. Do not apply an England summary to the whole UK.
UK Shortlists can explain buying and preparation boundaries. It cannot inspect an installation, confirm safe isolation or issue a certificate.
What this guide cannot check
Do not claim universal safety, guaranteed suitability, professional approval or permission to undertake protected work. Check current instructions, exact identifiers and local circumstances before acting.