Plumber companies in the Harrow area
581 plumber companies have a registered office in the Harrow area (HA postcodes), and 117 of them were formed in 2025 or 2026. In their latest accounts, the typical one held £12,658 in cash and owed £17,520 at year end.
The numbers
| Measure | Harrow | UK |
|---|---|---|
| Registered companies | 581 | 46,469 |
| Formed in 2025 or 2026 | 117 (20%) | 20% |
| Being struck off or in liquidation | 54 (9.3%) | 9.4% |
| Typical cash at year end | £12,658143 accounts | £16,864 |
| Typical amount owed at year end | £17,520347 accounts | £23,246 |
| Typical number of employees | 1361 accounts | 1 |
What this means if you’re starting one
Most of these businesses are run by one or two people
The typical plumber company in the Harrow area (HA postcodes) reports 1 employee; the top quarter has 2 or more (361 filings).
You are mostly up against owner-operators. Your own hours are likely to be your biggest cost, and the easiest one to undercount.
Planning a business like this in Harrow?
Answer two questions about your customer and what makes you different, and get a free three-week plan to test the idea before you spend real money. No account or card.
Check my ideaWhat these figures can’t tell you
Companies are counted where their registered office is, which may be an accountant or a home address rather than a shop. Sole traders and partnerships are not on the register, and electronically filed accounts cover roughly 60–75% of accounts filed each year. The figures describe companies that exist; they cannot prove demand for your idea or predict whether it will work. How the figures are built.
Plumber in other places
- London4,004 companies
- Romford589 companies
- Enfield467 companies
- Ilford465 companies
- Twickenham432 companies
- Croydon395 companies
- Southall343 companies
- Birmingham1,225 companies
Other businesses in Harrow
- Buy-to-let landlord6,126 companies
- Business consultancy3,624 companies
- Online shop2,983 companies
- IT support or consultancy2,930 companies
- Dog grooming and other personal services2,184 companies
- Builder1,534 companies
- Web design and software1,501 companies
- Physiotherapy or therapy clinic1,266 companies