Electrical work is a trust and compliance business, and the people checking your website reflect that. Homeowners comparing quotes for a rewire or a consumer unit upgrade. Landlords and letting agents deciding who handles the EICRs across a portfolio. Facilities managers and main contractors vetting an electrical firm before a maintenance contract or a fit-out is awarded.
None of them are browsing. They arrive with your name already in hand and one question: does this firm operate at the level the job requires? A dated site with the NICEIC logo pinned to a footer answers that question badly, and the contract quietly goes to the contractor whose site reads like an operation.
Electrician website design at this level means building the reputation infrastructure behind the firm: registrations, compliance capability, commercial track record, all presented to the standard your test results are. It decides which work you are considered for.