- Companies
- Specialist contractors
- Leigh-on-Sea
- Adept Mechanical Services Ltd
Adept Mechanical Services Ltd
- Company number
- 16742817
- Incorporated
- 25 Sep 20251 year trading
- Registered office
- 57A Broadway, Leigh-on-Sea, SS9 1PE
- Nature of business
- Other specialised construction activities n.e.c.
Adept Mechanical Services Ltd is a 1-year-old private limited company registered in Leigh-on-Sea, company number 16742817, one of 105 specialist construction companies in Leigh-on-Sea. Its next accounts are due at Companies House on 25 June 2027, and its first CT600 is due at HMRC on 24 September 2027.
Key dates
This company has not filed accounts yet. First accounts are due 21 months after incorporation, and the first period can run longer than a year.
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Where Adept Mechanical Services Ltd is registered
The registered office is in Leigh-on-Sea (SS9), in the Southend-on-Sea local authority area, East of England. Show SS9 1PE on a map.
Other trade companies in SS9
- Cheap Locksmith Essex LtdRepair services
- Alexander Hall Real Estate LtdProperty developers
- Britannia Roofing & Dampproofing LtdRoofers
- Elite Build & Co (Essex) LtdBuilders
- High Lift Scaffold LimitedScaffolders
- Hill's Plumbing, Heating & Gas LtdPlumbers and heating engineers
- MTS Piling LimitedSpecialist contractors
- Install & Transport LimitedMachinery repair and installation
Shared registered office
148 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 Adept Mechanical Services 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 25 June 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 26 Jun 2027 to 25 Jul 2027 | £150 |
| 1 to 3 months late | 26 Jul 2027 to 25 Sep 2027 | £375 |
| 3 to 6 months late | 26 Sep 2027 to 25 Dec 2027 | £750 |
| More than 6 months late | From 26 Dec 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Oct 2027 | £200 |
| 3 months late | 30 Dec 2027 | another £200 |
| 6 months late | 30 Mar 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Sep 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
- 16742817
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 25 September 2025 (1 year ago)
- Registered office
- 57A Broadway, Leigh-on-Sea, SS9 1PE
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 30 September (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 24 September 2026
Filing notes for specialist construction companies
Specialist contractors often work under CIS for main contractors. Retentions held back by the customer still count towards turnover once the work is done.
Similar companies in Leigh-on-Sea
Other active specialist construction companies registered in Leigh-on-Sea.
- Airmetrix Limited2026
- Ajf Electrical (Services) Limited2014
- All Timber Construction Limited2017
- All Timber Limited2020
- Amesview Developments Limited2003
- Andy King Limited2013
- Arp Energy Services Ltd2016
- Aster & Barnes Construction Management Limited2018
All specialist construction companies in Leigh-on-Sea · All trades in Leigh-on-Sea · Specialist contractors across the UK
Frequently asked questions
When are Adept Mechanical Services Ltd's accounts due?
Adept Mechanical Services Ltd's next accounts are due at Companies House by 25 June 2027 (in 256 days), covering the period to 30 September 2026.
When is Adept Mechanical Services Ltd's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 24 September 2026, due by 24 September 2027, and one for the period to 30 September 2026, due by 30 September 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Adept Mechanical Services Ltd still trading?
Adept Mechanical Services 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 Adept Mechanical Services Ltd do?
Adept Mechanical Services Ltd is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Adept Mechanical Services Ltd?
Adept Mechanical Services Ltd was incorporated on 25 September 2025, 1 year ago.
What is the penalty if Adept Mechanical Services 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 Adept Mechanical Services Ltd 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.