- Companies
- Groundworks and demolition
- Durham
- Exploration & Testing Associates Limited
Exploration & Testing Associates Limited
- Company number
- 11803869
- Incorporated
- 4 Feb 20197 years trading
- Registered office
- Unit 8B Bowburn South Industrial Estate, Bowburn, Durham, DH6 5AD
- Nature of business
- Test drilling and boring; Technical testing and analysis
Exploration & Testing Associates Limited is a 7-year-old private limited company registered in Durham, company number 11803869, one of 13 groundworks and demolition companies in Durham. Its next accounts are due at Companies House on 30 September 2027, and the CT600 for the period to 31 December 2026 is due at HMRC on 31 December 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 £38K (+6%) on the year before, to £680K.
- Net assets rose in 4 of 7 year-on-year comparisons on record.
- Current assets of £665K against £760K owed within a year: 0.9 times cover.
- 32 employees on average, up from 30 the year before.
- Balance sheets on record for 8 years, 2019 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Dec 2025 | £680K | £8,815 | £665K | £760K | 32 |
| 31 Dec 2024 | £641K | £92K | £642K | £612K | 30 |
| 31 Dec 2023 | £277K | £29K | £803K | £933K | 23 |
| 31 Dec 2022 | -£109K | £20K | £512K | £880K | 31 |
| 31 Dec 2021 | -£55K | £40K | £546K | £700K | 25 |
| 31 Dec 2020 | -£22K | £21K | £277K | £329K | 27 |
| 31 Aug 2019 | £74K | £95K | £117K | £72K | 1 |
| 31 Jul 2019 | £1 |
Where Exploration & Testing Associates Limited is registered
The registered office is in Durham (DH6), in the County Durham local authority area, North East. Show DH6 5AD on a map.
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What happens if Exploration & Testing Associates 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 September 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Oct 2027 to 31 Oct 2027 | £150 |
| 1 to 3 months late | 1 Nov 2027 to 31 Dec 2027 | £375 |
| 3 to 6 months late | 1 Jan 2028 to 31 Mar 2028 | £750 |
| More than 6 months late | From 1 Apr 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jan 2028 | £200 |
| 3 months late | 31 Mar 2028 | another £200 |
| 6 months late | 30 Jun 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Dec 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
- 11803869
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 4 February 2019 (7 years ago)
- Registered office
- Unit 8B Bowburn South Industrial Estate, Bowburn, Durham, DH6 5AD
- Nature of business
- Test drilling and boring (SIC 43130)
Technical testing and analysis (SIC 71200) - Year end
- 31 December (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 December 2025
- Last confirmation statement
- 8 February 2026
- Charges (mortgages)
- 2 outstanding of 2 registered
- Previous names
- K O M Holdings Limited (until 15 Mar 2019)
Filing notes for groundworks and demolition companies
Groundworks and demolition companies tend to own heavy plant, so capital allowances and hire purchase liabilities show up in both the accounts and the CT600.
Similar companies in Durham
Other active groundworks and demolition companies registered in Durham.
- Express Traffic Management Limited2014
- Lowerson Groundworks Limited2016
- M&F Groundworks Ltd2024
- MJ Geosolutions Ltd2025
- North East Earthworks Ltd2016
- Project, Technical and Site Management Services Limited2014
- Projekt Design and Management Limited2012
- R.S. Plant Hire & Groundworks Ltd2007
All groundworks and demolition companies in Durham · All trades in Durham · Groundworks and demolition across the UK
Frequently asked questions
When are Exploration & Testing Associates Limited's accounts due?
Exploration & Testing Associates Limited's next accounts are due at Companies House by 30 September 2027 (in 353 days), covering the period to 31 December 2026.
When is Exploration & Testing Associates Limited's CT600 due?
The CT600 for the period to 31 December 2026 is due at HMRC by 31 December 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 October 2027.
Is Exploration & Testing Associates Limited still trading?
Exploration & Testing Associates 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 Exploration & Testing Associates Limited do?
Exploration & Testing Associates Limited is registered under Test drilling and boring (SIC 43130); Technical testing and analysis (SIC 71200).
How old is Exploration & Testing Associates Limited?
Exploration & Testing Associates Limited was incorporated on 4 February 2019, 7 years ago.
What is the penalty if Exploration & Testing Associates 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 Exploration & Testing Associates 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.