- Companies
- Installers
- Hoddesdon
- Platonoff & Harris Limited
Platonoff & Harris Limited
- Company number
- 02704053
- Incorporated
- 6 Apr 199234 years trading
- Registered office
- 1 Tower House, Tower Centre, Hoddesdon, Hertfordshire, EN11 8UR
- Nature of business
- Other construction installation
Platonoff & Harris Limited is a 34-year-old private limited company registered in Hoddesdon, company number 02704053, one of 19 installation companies (insulation, lifts, shutters and similar) in Hoddesdon. Its next accounts are due at Companies House on 30 November 2026, and the CT600 for the period to 28 February 2026 is due at HMRC on 28 February 2027.
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 up £75K (+16.6%) on the year before, to £524K.
- Net assets rose in 8 of 9 year-on-year comparisons on record.
- Current assets of £1.5M against £780K owed within a year: 1.9 times cover.
- 13 employees on average, up from 11 the year before.
- Balance sheets on record for 10 years, 2015 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 28 Feb 2025 | £524K | £12K | £1.5M | £780K | 13 |
| 31 Aug 2023 | £450K | £4,502 | £1M | £603K | 11 |
| 31 Aug 2022 | £431K | £223K | £878K | £496K | 10 |
| 31 Aug 2021 | £400K | £344K | £957K | £588K | 12 |
| 31 Aug 2020 | £308K | £1M | £1.4M | £1.1M | 8 |
| 30 Sep 2019 | £176K | £465K | £987K | £788K | 7 |
| 30 Sep 2018 | £43K | £103K | £639K | £546K | 6 |
| 31 Dec 2017 | £26K | £0 | £756K | £665K | 6 |
| 31 Dec 2016 | £31K | £100 | £916K | £888K | 5 |
| 31 Dec 2015 | £31K | £100 | £665K | £636K |
Where Platonoff & Harris Limited is registered
The registered office is in Hoddesdon (EN11), in the Broxbourne local authority area, East of England. Show EN11 8UR on a map.
Other trade companies in EN11
- Poto LtdBuilders
- PMB Electrical Services LtdElectricians
- A-Plus Finishes LtdPainters and decorators
- Paul the Plumber and Friends LtdPlumbers and heating engineers
- GRB Services LimitedPlumbers and heating engineers
- UK Tog Alliance LtdMotor traders
- Meridian Fortis Homes LtdProperty developers
- Blox Container Group LimitedInstallers
Shared registered office
44 companies on our pages use this registered office address. An address shared this widely is usually an accountant's office or a company formation agent's service address, not where the business trades from.
What happens if Platonoff & Harris 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 30 November 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Dec 2026 to 31 Dec 2026 | £150 |
| 1 to 3 months late | 1 Jan 2027 to 28 Feb 2027 | £375 |
| 3 to 6 months late | 1 Mar 2027 to 31 May 2027 | £750 |
| More than 6 months late | From 1 Jun 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Mar 2027 | £200 |
| 3 months late | 28 May 2027 | another £200 |
| 6 months late | 28 Aug 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 28 Feb 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
- 02704053
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 6 April 1992 (34 years ago)
- Registered office
- 1 Tower House, Tower Centre, Hoddesdon, Hertfordshire, EN11 8UR
- Nature of business
- Other construction installation (SIC 43290)
- Year end
- 28 February (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 28 February 2025
- Last confirmation statement
- 6 July 2026
- Charges (mortgages)
- 1 outstanding of 6 registered
Filing notes for installation companies (insulation, lifts, shutters and similar)
Installation companies (insulation, lifts, shutters, solar and similar) often buy stock and equipment up front, so stock at the year end and capital allowances both affect the tax bill.
Similar companies in Hoddesdon
Other active installation companies (insulation, lifts, shutters and similar) registered in Hoddesdon.
- Regal Network Solutions Limited2025
- Soluro Ltd2006
- Top Steel Buildings Limited2021
- Up and Out Builds Ltd2017
- A. D Building & Maintenance Ltd2017
- Apex Li Ltd2026
- Bda Pipe Work Services Limited2025
- Beesee Windows Limited2019
All installation companies (insulation, lifts, shutters and similar) in Hoddesdon · All trades in Hoddesdon · Installers across the UK
Frequently asked questions
When are Platonoff & Harris Limited's accounts due?
Platonoff & Harris Limited's next accounts are due at Companies House by 30 November 2026 (in 48 days), covering the period to 28 February 2026.
When is Platonoff & Harris Limited's CT600 due?
The CT600 for the period to 28 February 2026 is due at HMRC by 28 February 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 December 2026.
Is Platonoff & Harris Limited still trading?
Platonoff & Harris Limited is listed as active on the Companies House register as of 1 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 Platonoff & Harris Limited do?
Platonoff & Harris Limited is registered under Other construction installation (SIC 43290).
How old is Platonoff & Harris Limited?
Platonoff & Harris Limited was incorporated on 6 April 1992, 34 years ago.
What is the penalty if Platonoff & Harris 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 Platonoff & Harris Limited on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 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.