James Ashford
Founder & Site ManagerStarted the firm in 2009 after twelve years as an installer. Still does site visits weekly.
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- About
A plumbing firm built to stick around
Sterling Plumbing started in 2009 with one van. Today we are 14 installers in London — still a company where whoever wrote your quote answers when you call.
Our story
We grew slowly, on purpose
We've turned down more jobs than we've taken — growing fast here means hiring people you don't know and hoping.
Every installer is a direct employee, trained alongside a colleague for six months before working solo. Slower to scale, but it's why we still redo 2014's work under warranty without an argument.
About seven in ten new customers come via referral — the only marketing stat we care about.
Certifications
Paperwork that actually means something
Anyone can call themselves a plumber in the UK — these are the certifications that actually matter.
WaterSafe approved
Registration number 48213, required for insurers.
TrustMark registered
Government-endorsed quality scheme, audited annually.
VAT registered & directly employed
No day-rate subcontractors, no gig labour.
£10M liability insurance
Full cover through Aviva. Proof sent on request.
The people
You get a name, not a case number
Rebecca Hale
Project Manager, ContractingHolds together pipe replacements and housing association projects — and the weekly reports.
Samir Haddad
Head of Emergency ResponseBuilds the on-call schedule and takes the toughest night shifts himself.
What we promise
Four promises we actually keep
- We call back the same business day. Even to say no.
- The price doesn't change without a call first.
- We clean up every evening. Not a building site.
- If something goes wrong, we come back. No arguing.
What customers say
Rated 4.9 out of 5
Based on 213 reviews on Google and Trustpilot.
Leak at half ten at night, fixed within 40 minutes, insurer paid out with no back-and-forth.
Found a rotten joist mid-job and still held the fixed price. No extra invoice.
Repiped 42 flats with weekly board reports — barely a single complaint.
Sunday morning boiler call, diagnosed by phone, fixed on the first visit.
Flagged a failing valve we didn't even ask about. Could've stayed quiet and profited later.
A £220 inspection found waterproofing that could've cost six figures at sale.
Next step
Get a fixed price before we lift a single tool
A free site visit anywhere in London — a written quote, VAT included, no surprises.
- Phone
- 020 7946 0192Mon–Fri 07:00–17:00
- Emergency line
- 020 7946 019324/7 · on-site within 60 min
- info@sterlingplumbing.co.ukReply same business day