- Companies
- Groundworks and demolition
- Plymouth
- Diamond Drilling Services (SW) Limited
Diamond Drilling Services (SW) Limited
- Company number
- 08514110
- Incorporated
- 2 May 201313 years trading
- Registered office
- 58 Pegasus Place, Sherford, Plymouth, PL9 8FB
- Nature of business
- Test drilling and boring
Diamond Drilling Services (SW) Limited is a 13-year-old private limited company registered in Plymouth, company number 08514110, one of 11 groundworks and demolition companies in Plymouth. Its next accounts are due at Companies House on 1 March 2027, and its first CT600 is due at HMRC on 31 May 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 Diamond Drilling Services (SW) 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 down £4,368 (-2.7%) on the year before, to £155K.
- Net assets rose in 6 of 9 year-on-year comparisons on record.
- Current assets of £111K against £43K owed within a year: 2.6 times cover.
- 3 employees on average during the year.
- Balance sheets on record for 10 years, 2016 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 May 2025 | £155K | £111K | £43K | 3 | |
| 31 May 2024 | £159K | £113K | £42K | 3 | |
| 31 May 2023 | £137K | £109K | £38K | 3 | |
| 31 May 2022 | £106K | £82K | £29K | 3 | |
| 31 May 2021 | £100K | £88K | £30K | 2 | |
| 31 May 2020 | £128K | £113K | £30K | 2 | |
| 31 May 2019 | £85K | £77K | £32K | ||
| 31 May 2018 | £54K | £29K | £18K | ||
| 31 May 2017 | £78K | £81K | £36K | ||
| 1 Jun 2016 | £53K | £70K | £31K |
Who runs and owns Diamond Drilling Services (SW) Limited
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officers (3)
| Name | Role | Appointed |
|---|---|---|
| P*** F*** | Director | May 2013 |
| J*** F*** | Director | Aug 2019 |
| S*** F*** | Director | Jun 2021 |
People with significant control (3)
Where Diamond Drilling Services (SW) Limited is registered
The registered office is in Plymouth (PL9), in the Plymouth local authority area, South West. Show PL9 8FB on a map.
Other trade companies in PL9
- CTP Trademark LtdMotor traders
- Evoclass LtdMotor traders
- R.M Marine Engineering LtdMachinery repair and installation
- Onee Property Cleaning LtdCleaning companies
- Redwire Technical LtdElectricians
- Trufit Carpentry LtdBuilders
- Ak Building & Construction Services LimitedSpecialist contractors
- J Cole Building Services LtdSpecialist contractors
What happens if Diamond Drilling Services (SW) 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 1 March 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 2 Mar 2027 to 1 Apr 2027 | £150 |
| 1 to 3 months late | 2 Apr 2027 to 1 Jun 2027 | £375 |
| 3 to 6 months late | 2 Jun 2027 to 1 Sep 2027 | £750 |
| More than 6 months late | From 2 Sep 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 2 Jun 2027 | £200 |
| 3 months late | 1 Sep 2027 | another £200 |
| 6 months late | 1 Dec 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 1 Jun 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
- 08514110
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 2 May 2013 (13 years ago)
- Registered office
- 58 Pegasus Place, Sherford, Plymouth, PL9 8FB
- Nature of business
- Test drilling and boring (SIC 43130)
- Year end
- 1 June (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 May 2025
- Last confirmation statement
- 8 June 2026
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 Plymouth
Other active groundworks and demolition companies registered in Plymouth.
- J S Murrain & Sons Limited2005
- M & M Steel Fixings South West Limited2014
- May Groundworks Ltd2026
- Stanlo Construction Limited2023
- Torbay Groundworks Ltd2025
- TRC (South West) Ltd2016
- West Plant Ltd2014
- Ace of Diamonds Limited2006
All groundworks and demolition companies in Plymouth · All trades in Plymouth · Groundworks and demolition across the UK
Frequently asked questions
When are Diamond Drilling Services (SW) Limited's accounts due?
Diamond Drilling Services (SW) Limited's next accounts are due at Companies House by 1 March 2027 (in 139 days), covering the period to 1 June 2026.
When is Diamond Drilling Services (SW) Limited's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 31 May 2026, due by 31 May 2027, and one for the period to 1 June 2026, due by 1 June 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Diamond Drilling Services (SW) Limited still trading?
Diamond Drilling Services (SW) 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 Diamond Drilling Services (SW) Limited do?
Diamond Drilling Services (SW) Limited is registered under Test drilling and boring (SIC 43130).
How old is Diamond Drilling Services (SW) Limited?
Diamond Drilling Services (SW) Limited was incorporated on 2 May 2013, 13 years ago.
Who runs Diamond Drilling Services (SW) Limited?
Diamond Drilling Services (SW) Limited has 3 active directors, the longest-serving appointed in May 2013. Their names and service addresses are on the Companies House register.
Who owns Diamond Drilling Services (SW) Limited?
3 people or companies have significant control of Diamond Drilling Services (SW) Limited: an individual (owns 25% to 50% of the shares); an individual (owns 25% to 50% of the shares); an individual (owns 75% or more of the shares).
What is the penalty if Diamond Drilling Services (SW) 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 Diamond Drilling Services (SW) 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.