- Company number
- 10312257
- Incorporated
- 4 Aug 201610 years trading
- Registered office
- 71 Exeter Road, Harrow, HA2 9PQ
- Nature of business
- Construction of commercial buildings; Construction of domestic buildings; Other business support service activities n.e.c.
Harrow Service Limited is a 10-year-old private limited company registered in Harrow, company number 10312257, one of 793 building contractors in Harrow. Companies House shows its accounts as overdue: they were due on 31 May 2026.
Key dates
Worked out from the year end and filing history on the Companies House register.
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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 down £19K (-182.1%) on the year before, to -£29K.
- Net assets rose in 3 of 7 year-on-year comparisons on record.
- Current assets of £15K against £44K owed within a year: 0.3 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 8 years, 2017 to 2024.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Aug 2024 | -£29K | £15K | £44K | 1 | |
| 31 Aug 2023 | -£10K | £129 | £10K | 1 | |
| 31 Aug 2022 | £423 | £1,016 | £1,439 | 1 | |
| 31 Aug 2021 | £12K | £0 | £12K | 0 | |
| 31 Aug 2020 | -£32K | £21 | £986 | 0 | |
| 31 Aug 2019 | £30K | £75 | £1 | ||
| 31 Aug 2018 | £28K | £67 | |||
| 31 Aug 2017 | -£33K | £1,340 |
Where Harrow Service Limited is registered
The registered office is in Harrow (HA2), in the Harrow local authority area, London. Show HA2 9PQ 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
What happens if Harrow Service Limited files late
If the accounts reach Companies House today, the late filing penalty is £750 (£1,500 if last year's accounts were also late). It rises at each step below.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jun 2026 to 30 Jun 2026 | £150 |
| 1 to 3 months late | 1 Jul 2026 to 31 Aug 2026 | £375 |
| 3 to 6 months late | 1 Sep 2026 to 30 Nov 2026 | £750 |
| More than 6 months late | From 1 Dec 2026 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Sep 2026 | £200 |
| 3 months late | 30 Nov 2026 | another £200 |
| 6 months late | 28 Feb 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Aug 2027 | 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
- 10312257
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 4 August 2016 (10 years ago)
- Registered office
- 71 Exeter Road, Harrow, HA2 9PQ
- Nature of business
- Construction of commercial buildings (SIC 41201)
Construction of domestic buildings (SIC 41202)
Other business support service activities n.e.c. (SIC 82990) - Year end
- 31 August (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 August 2024
- Last confirmation statement
- 30 July 2025
- Charges (mortgages)
- 1 outstanding of 1 registered
Filing notes for building contractors
Building companies often run the Construction Industry Scheme as a contractor, a subcontractor or both. CIS deductions suffered during the year are set against the PAYE bill, and any unrecovered balance at the year end matters when the accounts are drawn up.
Similar companies in Harrow
Other active building contractors registered in Harrow.
- Hasti Contractors Ltd2023
- Hatfield Interiors Limited2019
- Hazz Builders Ltd2024
- Hemraaj Constructions Ltd2024
- Herish Maintenance Limited2025
- Hestia Homes London Limited2022
- Hexagon Framework Ltd2025
- Hilverdon Limited2016
All building contractors in Harrow · All trades in Harrow · Builders across the UK
Frequently asked questions
When are Harrow Service Limited's accounts due?
Harrow Service Limited's accounts were due at Companies House on 31 May 2026 and the register shows them as overdue.
When is Harrow Service Limited's CT600 due?
The CT600 for the period to 31 August 2025 is due at HMRC by 31 August 2026, 12 months after the period end. The corporation tax itself is payable earlier, by 1 June 2026.
Is Harrow Service Limited still trading?
Harrow Service 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 Harrow Service Limited do?
Harrow Service Limited is registered under Construction of commercial buildings (SIC 41201); Construction of domestic buildings (SIC 41202); Other business support service activities n.e.c. (SIC 82990).
How old is Harrow Service Limited?
Harrow Service Limited was incorporated on 4 August 2016, 10 years ago.
What is the penalty if Harrow Service 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 Harrow Service 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.