Choosing a trade for a North London house is mostly a question of competence for the installation in front of you. NW3, NW6 and NW8 stock includes lead and iron pipe, unvented cylinders, mixed consumer units, and lighting circuits that have been extended room by room. A general description of “a plumber” or “an electrician” does not say whether that person can work on the system that is actually there.
Gas work is undertaken by Gas Safe registered engineers. Notifiable electrical work in a dwelling follows Building Regulations Part P, with a certificate at completion for the work that requires one. Water regulations apply where fittings and supply pipework are altered. These are registration and certification routes. They are checked against the job, not treated as a slogan on a van.
Hampstead On Demand employs the maintenance trades directly: plumbing, electrics, heating, roofing and the small building tasks that keep a house usable. Larger replacement and refurbishment is delivered by Hampstead Renovations, with the same office at 250 Finchley Road. The guides explain how to brief either team so the first visit arrives with the right competence, the right access, and a clear description of what has already failed.
A useful brief names the symptom, the age of the installation if you know it, any previous certificate, and whether the property is tenanted. It also says if you have smelled gas or lost safe isolation. A gas leak is reported to the National Gas Emergency Service on 0800 111 999 before a contractor is called. Urgent make-safe for other failures is arranged on 020 7101 3168.