What lighting installation costs in 2026 — per downlight, per room, spotlights, wiring new fittings and outdoor lighting. Realistic UK price ranges and what affects them.

What PAT testing costs in 2026 — per-item prices, minimum call-out charges, the London premium, and how volume cuts the rate. A clear UK pricing guide.

What a landlord electrical safety certificate (EICR) costs in 2026 — by property size and for London — what’s included, and why remedial work is quoted separately.