Lead generation for UK construction firms and trades
Construction is the biggest single sector on UK Companies House, ~600,000 active companies across SIC 41–43. Leadistry slices that volume by sub-trade (electrical, plumbing, joinery), region, and growth stage so you can target the segment your B2B service actually fits.
Why Leadistry for this use case
Find sub-trades by SIC
SIC 43210 = electrical, 43221 = plumbing/HVAC, 43320 = joinery, 43342 = painting/decorating. Each is its own micro-market with distinct outreach needs. Leadistry's 5-digit SIC filter picks them apart cleanly.
Catch active developers
SIC 41100 (development of building projects) is where the residential developers live. Filter by incorporation age 5+ years for established firms with multiple sites, or 0–3 for new entrants likely to need partner trades.
Postcode-bounded territory
Construction is local. Filter by postcode prefix (e.g. M, BB, OL for Greater Manchester) and your search returns only companies in your service radius, no wasted outreach.
How a search would look
Recommended SIC codes
- 41100, Development of building projects
- 41202, Construction of domestic buildings
- 43210, Electrical installation
- 43221, Plumbing, heating, air-con installation
- 43320, Joinery installation
Extra filters
- Postcode prefix matches your service area
- Incorporation age (0–3 = new entrants, 5+ = established)
- Optional: excludes companies in dissolution/strike-off
What each lead contains
Owner-director + named-personal email + registered/trading address + website (often basic, sometimes none, see /for/marketing-agencies if you sell digital). Useful for material suppliers, subcontracted trades, plant hire, fleet insurance, and SaaS targeting construction.
Common questions
How big is the UK construction market by company count?
~600,000 active UK companies under SIC codes 41–43 as of the most recent Companies House refresh. Leadistry indexes every one and refreshes daily, so newly-incorporated trades show up within 24 hours.
Can I filter by company size for material-supplier outreach?
Indirectly, by accounting category (micro / small / medium). A company filing micro accounts has fewer than 10 employees; small is 10–50; medium is 50+. This is the strongest size proxy Companies House publishes without forcing you to scrape balance sheets.
Many construction companies don't have websites, is that a problem?
It's an opportunity. Bronze-tier leads (no website discovered) are FREE on Leadistry, you only pay for Silver and Gold. If you sell digital services to construction, see /for/marketing-agencies.