O.n.m Joinery Ltd
Window & double glazing company registered in Doncaster, South Yorkshire
Registered address
UNIT 5, CARR GRANGE, Doncaster DN4 5HY
✓ Active on Companies House
Companies House number12500400
IncorporatedMarch 2020
6 years on the register
6 years on the register
Company typePrivate Limited Company
Trade (SIC 43320)Joinery installation (windows, doors & frames)
Accounts on fileUnaudited abridged accounts · last filed March 2025 · next due December 2026
Listed from the public Companies House register, not an endorsement. Quote requests go to FENSA or Certass registered installers covering your postcode, not necessarily this company. Accounts filing category reflects company size under Companies House rules, not service quality. Map location is approximate, based on the registered postcode.
Before you book O.n.m Joinery Ltd
This page confirms the company is on the Companies House register. It does not confirm FENSA or Certass registration, insurance, or trading status — check those yourself first.
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How do I get a quote from a window installer in Doncaster?
Use the "Get Free Quotes" form on this page. Your job details go to FENSA or Certass registered installers covering the DN postcode area, who contact you directly. Doncaster has 127 registered window and glazing businesses in this directory, though the installers who quote are not necessarily among them. It is free and there is no obligation.
Should I repair or replace my windows?
Repair makes sense for a failed seal (misted double glazing), a worn handle or hinge, or a damaged lock on an otherwise sound frame — usually a straightforward swap. Replacement is the better value once frames are warped, draughty, rotten (on timber) or past roughly 20 to 25 years old, or when several units across the house have failed. Ask the installer to price both where it's borderline.
Does a listing here mean O.n.m Joinery Ltd is recommended?
No. Companies appear in this directory because they are on the Companies House register under a window/joinery installation trade code. A listing is not vetting, endorsement, or a guarantee that the company is trading or FENSA/Certass registered.
How many window and glazing companies are there in South Yorkshire?
This directory holds 801 active window and glazing businesses across 39 towns in South Yorkshire, all from the Companies House register. Doncaster accounts for 127, among the county's busiest. About 39% of South Yorkshire's registered window and glazing firms were incorporated in the last three years, so weigh incorporation date and FENSA/Certass registration, not just company age.