- Companies
- Plumbers and heating engineers
- Harrow
- Geo Air Limited
Geo Air Limited
- Company number
- 12912112
- Incorporated
- 29 Sep 20206 years trading
- Registered office
- 25 Kenilworth Avenue, Kenilworth Avenue, Harrow, HA2 8RZ
- Nature of business
- Plumbing, heat and air-conditioning installation; specialised design activities; Other business support service activities n.e.c.
Geo Air Limited is a 6-year-old private limited company registered in Harrow, company number 12912112, one of 154 plumbing and heating companies in Harrow. Its next accounts are due at Companies House on 27 June 2027, and the CT600 for the period to 27 September 2026 is due at HMRC on 27 September 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
Is this your company?
File the accounts to Companies House and the CT600 to HMRC yourself with A.X.E.L Filing. One set of questions, both filings, £49 flat. No accountant, no subscription.
File for Geo Air LimitedOr get a reminder before each deadline
Free. We email you 60, 30, 14, 7 and 1 days before the accounts, CT600 and confirmation statement are due. Unsubscribe in one click.
Finances
From each year's balance sheet filed at Companies House. Small companies do not have to publish turnover or profit, so these are balance sheet figures.
- Net assets up £13K (+84.3%) on the year before, to £28K.
- Net assets rose in 2 of 4 year-on-year comparisons on record.
- Current assets of £211K against £187K owed within a year: 1.1 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 5 years, 2021 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 30 Sep 2025 | £28K | £211K | £187K | 1 | |
| 30 Sep 2024 | £15K | £100K | £89K | 1 | |
| 30 Sep 2023 | -£7,046 | £13K | £20K | 1 | |
| 30 Sep 2022 | -£4,624 | £8,122 | £13K | 1 | |
| 30 Sep 2021 | -£533 | £8,233 | £8,766 | 1 |
Where Geo Air Limited is registered
The registered office is in Harrow (HA2), in the Harrow local authority area, London. Show HA2 8RZ on a map.
Other trade companies in HA2
- KJP Engineering LtdElectricians
- JNJ Engineering LimitedCivil engineering
- Notting Hill Sew LtdRepair services
- Grandwellautos LtdMotor traders
- Multisteel Powdercoating LtdPainters and decorators
- Neon Systems LtdElectricians
- Firstclass Facilities LtdCleaning companies
- PMD Construct LtdBuilders
Also registered at this address
1 other company uses the same registered office as Geo Air Limited.
- Gyan Mechanical Solution LimitedFinishing trades
What happens if Geo Air Limited files late
Companies House charges an automatic penalty the day after the deadline, and it rises the longer the accounts are late. These are the dates for this company's accounts due on 27 June 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 28 Jun 2027 to 27 Jul 2027 | £150 |
| 1 to 3 months late | 28 Jul 2027 to 27 Sep 2027 | £375 |
| 3 to 6 months late | 28 Sep 2027 to 27 Dec 2027 | £750 |
| More than 6 months late | From 28 Dec 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 28 Sep 2027 | £200 |
| 3 months late | 27 Dec 2027 | another £200 |
| 6 months late | 27 Mar 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 27 Sep 2028 | another 10% of any unpaid tax |
For returns filed on or after 1 April 2026. Late three times in a row and the £200 penalties become £1,000 each.
Company details
As held on the Companies House register.
- Company number
- 12912112
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 29 September 2020 (6 years ago)
- Registered office
- 25 Kenilworth Avenue, Kenilworth Avenue, Harrow, HA2 8RZ
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
specialised design activities (SIC 74100)
Other business support service activities n.e.c. (SIC 82990) - Year end
- 27 September (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 30 September 2025
- Last confirmation statement
- 28 September 2025
Filing notes for plumbing and heating companies
Plumbing and heating companies frequently work under CIS for main contractors and also directly for homeowners, so turnover can mix CIS and non-CIS income.
Similar companies in Harrow
Other active plumbing and heating companies registered in Harrow.
- Gilchrist Engineering Holdings Limited2025
- Gilchrist Engineering Services Limited2018
- Greenflow Heating Ltd2022
- H & C Aircon Limited2003
- H K Heating Limited2019
- Hampden Heating Ltd2025
- Hampton Heating & Plumbing Ltd2010
- Heating and Plumbing London Ltd2026
All plumbing and heating companies in Harrow · All trades in Harrow · Plumbers and heating engineers across the UK
Frequently asked questions
When are Geo Air Limited's accounts due?
Geo Air Limited's next accounts are due at Companies House by 27 June 2027 (in 257 days), covering the period to 27 September 2026.
When is Geo Air Limited's CT600 due?
The CT600 for the period to 27 September 2026 is due at HMRC by 27 September 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 28 June 2027.
Is Geo Air Limited still trading?
Geo Air Limited is listed as active on the Companies House register (checked 13 Oct 2026). Active means it has not been dissolved or entered insolvency; it does not show whether it is currently taking on work.
What does Geo Air Limited do?
Geo Air Limited is registered under Plumbing, heat and air-conditioning installation (SIC 43220); specialised design activities (SIC 74100); Other business support service activities n.e.c. (SIC 82990).
How old is Geo Air Limited?
Geo Air Limited was incorporated on 29 September 2020, 6 years ago.
What is the penalty if Geo Air Limited files its accounts late?
Companies House charges £150 if the accounts are up to 1 month late, £375 up to 3 months, £750 up to 6 months and £1,500 after that, doubled if the previous year's accounts were also late. HMRC charges £200 for a CT600 filed a day late and another £200 at 3 months.
Official records
View Geo Air Limited on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 13 Oct 2026). Deadlines are worked out from the register and assume a standard accounting period; a change of year end or a short period moves them. This page is general information, not tax or accountancy advice.