- Companies
- Civil engineering
- Bexley
- Optimum Thermal Services Ltd
Optimum Thermal Services Ltd
- Company number
- 14235101
- Incorporated
- 14 Jul 20224 years trading
- Registered office
- 19 Montpelier Avenue, Bexley, Kent, DA5 3AP
- Nature of business
- Construction of other civil engineering projects n.e.c.
Optimum Thermal Services Ltd is a 4-year-old private limited company registered in Bexley, company number 14235101, one of 11 civil engineering contractors in Bexley. Its next accounts are due at Companies House on 30 April 2028, and the CT600 for the period to 31 July 2027 is due at HMRC on 31 July 2028.
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 £43K (+288.6%) on the year before, to £57K.
- Net assets rose in 3 of 3 year-on-year comparisons on record.
- Current assets of £58K against £46K owed within a year: 1.3 times cover.
- 5 employees on average, up from 3 the year before.
- Balance sheets on record for 4 years, 2023 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Jul 2026 | £57K | £38K | £58K | £46K | 5 |
| 31 Jul 2025 | £15K | £54K | £72K | £60K | 3 |
| 31 Jul 2024 | £186 | £4,521 | £23K | £22K | 2 |
| 31 Jul 2023 | £123 | £7,468 | £19K | £17K | 3 |
Where Optimum Thermal Services Ltd is registered
The registered office is in Bexley (DA5), in the Bexley local authority area, London. Show DA5 3AP on a map.
Other trade companies in DA5
- Homeheat+ LtdPlumbers and heating engineers
- Apex South West Construction LtdBuilders
- E & F Surfacing & Construction LtdSpecialist contractors
- T&R Cleaning Services LtdCleaning companies
- Paul C Jordan LimitedBuilders
- SX Plumbing LimitedPlumbers and heating engineers
- Rennell Interiors LtdJoiners and carpenters
- Ravenford Planning LtdProperty developers
Shared registered office
45 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 Optimum Thermal 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 30 April 2028.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 May 2028 to 31 May 2028 | £150 |
| 1 to 3 months late | 1 Jun 2028 to 31 Jul 2028 | £375 |
| 3 to 6 months late | 1 Aug 2028 to 31 Oct 2028 | £750 |
| More than 6 months late | From 1 Nov 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Aug 2028 | £200 |
| 3 months late | 31 Oct 2028 | another £200 |
| 6 months late | 31 Jan 2029 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jul 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
- 14235101
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 14 July 2022 (4 years ago)
- Registered office
- 19 Montpelier Avenue, Bexley, Kent, DA5 3AP
- Nature of business
- Construction of other civil engineering projects n.e.c. (SIC 42990)
- Year end
- 31 July (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 July 2026
- Last confirmation statement
- 14 July 2026
Filing notes for civil engineering contractors
Civil engineering contractors usually carry plant and machinery, so capital allowances (the annual investment allowance and the main pool) do much of the work in the corporation tax computation.
Similar companies in Bexley
Other active civil engineering contractors registered in Bexley.
- Premier Brickwork (Se) Limited2004
- RSM Civil & Structural Consultant Ltd2026
- W O D Utility Services Limited2020
- C.D.G. Construction Limited1996
- Carl M. Sutton Limited2008
- Copek Limited2018
- D5 Services Ltd2021
- DCL Consulting Engineers Ltd1999
All civil engineering contractors in Bexley · All trades in Bexley · Civil engineering across the UK
Frequently asked questions
When are Optimum Thermal Services Ltd's accounts due?
Optimum Thermal Services Ltd's next accounts are due at Companies House by 30 April 2028 (in 565 days), covering the period to 31 July 2027.
When is Optimum Thermal Services Ltd's CT600 due?
The CT600 for the period to 31 July 2027 is due at HMRC by 31 July 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 May 2028.
Is Optimum Thermal Services Ltd still trading?
Optimum Thermal 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 Optimum Thermal Services Ltd do?
Optimum Thermal Services Ltd is registered under Construction of other civil engineering projects n.e.c. (SIC 42990).
How old is Optimum Thermal Services Ltd?
Optimum Thermal Services Ltd was incorporated on 14 July 2022, 4 years ago.
What is the penalty if Optimum Thermal 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 Optimum Thermal 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.