First, check what you have
A gas hob has burners and pan supports over open flames, and a gas oven usually lights with a spark you can hear. An electric oven has elements and a fan behind a cover, and an electric hob is a flat glass top with rings marked on it. A dual fuel cooker has a gas hob and an electric oven, and the rating plate inside the door or on the back says which fuel each part uses.
Gas appliances: Great Britain’s rule
In Great Britain, the Gas Safety (Installation and Use) Regulations 1998 say anyone working on gas appliances as part of a business must belong to a class of persons approved by the Health and Safety Executive, which in practice means the Gas Safe Register. Mendlow is not on that register and does no gas work.
You can check an engineer’s registration and what work they are qualified for on the register’s own website before they visit.
Electric ovens and hobs: what a repair involves
Most electric oven faults are an element, the fan motor, the thermostat or the door. Each can be tested with the oven isolated at its cooker switch and the back panel off, and most parts take less than an hour to change.
On a dual fuel cooker, an engineer without gas registration can repair the electric oven but must leave the gas hob alone.
When the wiring is the job
In England, adding a new circuit, such as a new supply for a cooker, is notifiable electrical work under Part P of the Building Regulations. Mendlow repairs appliances and does not install circuits.
Replacing a faulty element or a cooker’s internal wiring is part of repairing the appliance. Moving a cooker to a new position, or adding a supply where there was none, is building work for an electrician.
Sources. General guidance, not legal advice.
- The Gas Safety (Installation and Use) Regulations 1998, regulation 3 (extent: England, Wales and Scotland), legislation.gov.uk, read 6 November 2026.
- Approved Document P, Electrical safety: dwellings (England), GOV.UK, read 6 November 2026.