- Companies
- Specialist contractors
- Billericay
- South East Energy Ltd
South East Energy Ltd
- Company number
- 16942647
- Incorporated
- 5 Jan 2026
- Registered office
- Byfield House, Crays Hill, Billericay, CM11 2XN
- Nature of business
- Other specialised construction activities n.e.c.
South East Energy Ltd is a newly incorporated private limited company registered in Billericay, company number 16942647, one of 60 specialist construction companies in Billericay. Its next accounts are due at Companies House on 5 October 2027, and its first CT600 is due at HMRC on 4 January 2028.
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.
Is this your company?
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Where South East Energy Ltd is registered
The registered office is in Billericay (CM11), in the Basildon local authority area, East of England. Show CM11 2XN on a map.
Other trade companies in CM11
- Washthatoffbrother LtdCleaning companies
- Prestige Auto Engineering LtdMechanics and garages
- E3 Building and Roofing LtdRoofers
- E3 Landscaping LtdLandscapers and gardeners
- The Aircon Specialist LtdPlumbers and heating engineers
- 1ST Class Property Group LimitedProperty developers
- Bobys Garage Engine Build HPC LtdMechanics and garages
- Winsor Autocare Services LimitedMechanics and garages
What happens if South East Energy 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 5 October 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 6 Oct 2027 to 5 Nov 2027 | £150 |
| 1 to 3 months late | 6 Nov 2027 to 5 Jan 2028 | £375 |
| 3 to 6 months late | 6 Jan 2028 to 5 Apr 2028 | £750 |
| More than 6 months late | From 6 Apr 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Feb 2028 | £200 |
| 3 months late | 30 Apr 2028 | another £200 |
| 6 months late | 31 Jul 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jan 2029 | 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
- 16942647
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 5 January 2026
- Registered office
- Byfield House, Crays Hill, Billericay, CM11 2XN
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 31 January (accounting reference date)
- Accounts type
- No accounts filed yet
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 Billericay
Other active specialist construction companies registered in Billericay.
- Sullivan White Limited2019
- The Pond Specialist Limited2010
- Vancouver Building & Maintenance Limited2003
- W C Drains Limited2010
- Wicked Or Wot (Wow) Design Ltd2017
- Wilton Site Management Limited2010
- A.M.S. (Southeast) Limited2011
- Abell Contracts Limited2020
All specialist construction companies in Billericay · All trades in Billericay · Specialist contractors across the UK
Frequently asked questions
When are South East Energy Ltd's accounts due?
South East Energy Ltd's next accounts are due at Companies House by 5 October 2027 (in 356 days), covering the period to 31 January 2027.
When is South East Energy 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 4 January 2027, due by 4 January 2028, and one for the period to 31 January 2027, due by 31 January 2028. Corporation tax is payable 9 months and 1 day after the end of each.
Is South East Energy Ltd still trading?
South East Energy 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 South East Energy Ltd do?
South East Energy Ltd is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is South East Energy Ltd?
South East Energy Ltd was incorporated on 5 January 2026, less than a year ago.
What is the penalty if South East Energy 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 South East Energy 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.