# Plumbers in Harpenden

6 plumbers near Harpenden, ranked by the strength of independent public evidence (reviews, verified credentials and registry data cross-checked across named sources — no ads, no paid placement). Below are the top 6 by evidence.

| Trader | Location | Rating | Reviews | Named sources |
| --- | --- | --- | --- | --- |
| [First Plumbing LTD](https://mytrustedtraders.com/traders/first-plumbing-ltd-2) | Harpenden | 4.8/5 | 19 | Checkatrade, Companies House |
| [J Norman Plumbing](https://mytrustedtraders.com/traders/j-norman-plumbing) | Harpenden | 5.0/5 | 5 | Checkatrade |
| [Baker Smith Limited](https://mytrustedtraders.com/traders/baker-smith-limited-2) | Harpenden | 4.7/5 | 225 | Checkatrade, TrustATrader |
| [S. Miller Electrical Ltd](https://mytrustedtraders.com/traders/s-miller-electrical-ltd) | Harpenden | 5.0/5 | 243 | Checkatrade |
| [National Roofing & Building LTD](https://mytrustedtraders.com/traders/national-roofing-building-ltd) | Harpenden | 4.9/5 | 75 | Checkatrade |
| [Felton Home Renovations](https://mytrustedtraders.com/traders/felton-home-renovations) | Harpenden | 5.0/5 | 7 | Checkatrade |

Each trader's full public evidence is at its profile URL (append `/md` for a Markdown version). See all plumbers in the United Kingdom at `https://mytrustedtraders.com/find/plumber`.

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Source: MyTrustedTraders — https://mytrustedtraders.com/find/plumber/harpenden
Real public evidence only: every figure traces to a named source and is cross-checked. If a source does not carry a field, it is not shown.