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  4. Opec Construction Ltd

Opec Construction Ltd

ActiveTotal exemption (full) accountsFinishing tradesTowcester
Company number
03669621
Incorporated
18 Nov 199827 years trading
Registered office
Henge Barn Pury Hill Business Park, Alderton Road, Towcester, Northamptonshire, NN12 7LS
Nature of business
Other building completion and finishing
Accounts due in
536 days
31 Mar 2028
Net assets
£771K▲
+3.0% on the year before
Cash at bank
£890K▲
At 30 Jun 2026
Employees
7
Average during the year
From the Companies House register, 1 Oct 2026

Opec Construction Ltd is a 27-year-old private limited company registered in Towcester, company number 03669621, one of 17 building finishing companies in Towcester. Its next accounts are due at Companies House on 31 March 2028, and the CT600 for the period to 30 June 2027 is due at HMRC on 30 June 2028.

Key dates

Worked out from the year end and filing history on the Companies House register.

Accounts due
31 Mar 2028
in 536 days
For the period to 30 Jun 2027
CT600 due
30 Jun 2028
in 627 days
Period 1 Jul 2026 to 30 Jun 2027
Corporation tax payment
1 Apr 2028
in 537 days
9 months and 1 day after the period end
Confirmation statement
7 Aug 2027
in 299 days
Last made up to 24 Jul 2026

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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 £22K (+3%) on the year before, to £771K.
  • Net assets rose in 4 of 5 year-on-year comparisons on record.
  • Current assets of £1.2M against £440K owed within a year: 2.7 times cover.
  • 7 employees on average, down from 10 the year before.
  • Balance sheets on record for 6 years, 2021 to 2026.

Net assets by year

Net assets at each year end, 2021 to 2026£0£500K31 March 2021: net assets £561K£561K202130 June 2022: net assets £687K£687K202230 June 2023: net assets £612K£612K202330 June 2024: net assets £686K£686K202430 June 2025: net assets £749K£749K202530 June 2026: net assets £771K£771K2026
Net assets at each year end, 2021 to 2026£0£500K31 March 2021: net assets £561K£561K202130 June 2022: net assets £687K£687K202230 June 2023: net assets £612K£612K202330 June 2024: net assets £686K£686K202430 June 2025: net assets £749K£749K202530 June 2026: net assets £771K£771K2026
Year endNet assetsCashCurrent assetsOwed within a yearEmployees
30 Jun 2026£771K£890K£1.2M£440K7
30 Jun 2025£749K£457K£875K£135K10
30 Jun 2024£686K£311K£1.1M£404K9
30 Jun 2023£612K£31K£840K£159K9
30 Jun 2022£687K£31K£1.3M£473K9
31 Mar 2021£561K£75K£1.2M£455K9

Public contracts won

Opec Construction Ltd has one public sector contract award on record; the ones with their own published value total £250K (2026). Source: Contracts Finder and Find a Tender award notices. These were matched by the company's exact name because the notice gave no company number.

BuyerContractValueAwarded
Financial Conduct AuthoritySecure Room Alterations£250K29 Jul 2026

Where Opec Construction Ltd is registered

Opec Construction Ltd's registered office on a map of the UK

The registered office is in Towcester (NN12), in the West Northamptonshire local authority area, East Midlands. Show NN12 7LS on a map.

Other trade companies in NN12

Shared registered office

77 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 Opec Construction Ltd 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 31 March 2028.

Companies HouseAccounts deliveredPenalty
Up to 1 month late1 Apr 2028 to 30 Apr 2028£150
1 to 3 months late1 May 2028 to 30 Jun 2028£375
3 to 6 months late1 Jul 2028 to 30 Sep 2028£750
More than 6 months lateFrom 1 Oct 2028£1,500

Penalties double if the accounts were also late the year before.

HMRC (CT600)FromPenalty
1 day late1 Jul 2028£200
3 months late30 Sep 2028another £200
6 months late30 Dec 2028HMRC estimates the tax and adds 10% of the unpaid tax
12 months late30 Jun 2029another 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
03669621
Status
Active
Company type
Private limited company
Incorporated
18 November 1998 (27 years ago)
Registered office
Henge Barn Pury Hill Business Park, Alderton Road, Towcester, Northamptonshire, NN12 7LS
Nature of business
Other building completion and finishing (SIC 43390)
Year end
30 June (accounting reference date)
Accounts type
Total exemption (full)
Last accounts made up to
30 June 2026
Last confirmation statement
24 July 2026
Charges (mortgages)
1 outstanding of 1 registered

Filing notes for building finishing companies

Finishing trade companies cover a wide range of work. Most are micro-entities with simple accounts and a straightforward CT600.

Similar companies in Towcester

Other active building finishing companies registered in Towcester.

All building finishing companies in Towcester · All trades in Towcester · Finishing trades across the UK

Frequently asked questions

When are Opec Construction Ltd's accounts due?

Opec Construction Ltd's next accounts are due at Companies House by 31 March 2028 (in 536 days), covering the period to 30 June 2027.

When is Opec Construction Ltd's CT600 due?

The CT600 for the period to 30 June 2027 is due at HMRC by 30 June 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 April 2028.

Is Opec Construction Ltd still trading?

Opec Construction Ltd 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 Opec Construction Ltd do?

Opec Construction Ltd is registered under Other building completion and finishing (SIC 43390).

How old is Opec Construction Ltd?

Opec Construction Ltd was incorporated on 18 November 1998, 27 years ago.

Has Opec Construction Ltd won public sector contracts?

Yes. Opec Construction Ltd has one contract award from public bodies on Contracts Finder and Find a Tender (those with their own published value total £250K), most recently from Financial Conduct Authority.

What is the penalty if Opec Construction Ltd 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 Opec Construction Ltd on Companies House for filed documents, officers and the full history.

Report an error on this page

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.

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