- Companies
- Specialist contractors
- Hemel Hempstead
- Trimlock Services Limited
Trimlock Services Limited
- Company number
- 08453633
- Incorporated
- 20 Mar 201313 years trading
- Registered office
- 56A London Road, Apsley, Hemel Hempstead, Hertfordshire, HP3 9SB
- Nature of business
- Other specialised construction activities n.e.c.
Trimlock Services Limited is a 13-year-old private limited company registered in Hemel Hempstead, company number 08453633, one of 104 specialist construction companies in Hemel Hempstead. Its next accounts are due at Companies House on 31 December 2027, and the CT600 for the period to 31 March 2027 is due at HMRC on 31 March 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 £100K (+11.1%) on the year before, to £1M.
- Net assets rose in 9 of 9 year-on-year comparisons on record.
- Current assets of £1.1M against £162K owed within a year: 6.8 times cover.
- 8 employees on average during the year.
- Balance sheets on record for 10 years, 2017 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2026 | £1M | £916K | £1.1M | £162K | 8 |
| 31 Mar 2025 | £903K | £924K | £987K | £171K | 8 |
| 31 Mar 2024 | £759K | £733K | £780K | £130K | 7 |
| 31 Mar 2023 | £683K | £648K | £680K | £94K | 5 |
| 31 Mar 2022 | £611K | £665K | £708K | £164K | 6 |
| 31 Mar 2021 | £493K | £534K | £565K | £154K | 6 |
| 31 Mar 2020 | £489K | £462K | £566K | £183K | 7 |
| 31 Mar 2019 | £414K | £455K | £528K | £193K | 7 |
| 31 Mar 2018 | £378K | £470K | £477K | £173K | 8 |
| 31 Mar 2017 | £304K | £387K | £456K | £258K | 7 |
Public contracts won
Trimlock Services Limited has 2 public sector contract awards on record; the ones with their own published value total £40K, from 2017 to 2025. Source: Contracts Finder and Find a Tender award notices. For 1 of them the published figure is a shared or multi-year ceiling (a framework place, a multi-supplier award, or more than a small company could hold alone), so no value is shown. These were matched by the company's exact name because the notice gave no company number.
Awards by year
Main buyers
- London Borough of Harrow1 award
- Met Office1 award
| Buyer | Contract | Value | Awarded |
|---|---|---|---|
| London Borough of Harrow | Harrow Tennis Courts Fence and Gate Upgrade Project | Ceiling, not shown | 5 Jun 2025 |
| Met Office | Ground Works | £40K | 15 Feb 2017 |
Where Trimlock Services Limited is registered
The registered office is in Hemel Hempstead (HP3), in the Dacorum local authority area, East of England. Show HP3 9SB on a map.
Other trade companies in HP3
- G-Force Plumbing & Heating Contractors LimitedPlumbers and heating engineers
- Primeline Property Solutions LtdRoofers
- Elite Roof Repairs LtdRoofers
- Connor Air LimitedPlumbers and heating engineers
- Irv Services LtdInstallers
- Herts Number Plates LtdMotor traders
- RH Design and Electrical LtdBuilders
- Ejc Plumbing LtdPlumbers and heating engineers
Also registered at this address
1 other company uses the same registered office as Trimlock Services Limited.
- Highcroft Landscapes LimitedLandscapers and gardeners
What happens if Trimlock Services 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 31 December 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2028 to 31 Jan 2028 | £150 |
| 1 to 3 months late | 1 Feb 2028 to 31 Mar 2028 | £375 |
| 3 to 6 months late | 1 Apr 2028 to 30 Jun 2028 | £750 |
| More than 6 months late | From 1 Jul 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2028 | £200 |
| 3 months late | 30 Jun 2028 | another £200 |
| 6 months late | 30 Sep 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 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
- 08453633
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 20 March 2013 (13 years ago)
- Registered office
- 56A London Road, Apsley, Hemel Hempstead, Hertfordshire, HP3 9SB
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 March 2026
- Last confirmation statement
- 20 March 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 Hemel Hempstead
Other active specialist construction companies registered in Hemel Hempstead.
- Twinfinity Construction Ltd2013
- Uki Storage Solutions Ltd2009
- Verdeland Promotions Ltd2024
- Vore Ltd2019
- Vylox Ltd2023
- West Mercian Construction Group Ltd2026
- William Kirk Management Limited2014
- Willow Logistics Ltd2026
All specialist construction companies in Hemel Hempstead · All trades in Hemel Hempstead · Specialist contractors across the UK
Frequently asked questions
When are Trimlock Services Limited's accounts due?
Trimlock Services Limited's next accounts are due at Companies House by 31 December 2027 (in 444 days), covering the period to 31 March 2027.
When is Trimlock Services Limited's CT600 due?
The CT600 for the period to 31 March 2027 is due at HMRC by 31 March 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2028.
Is Trimlock Services Limited still trading?
Trimlock Services 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 Trimlock Services Limited do?
Trimlock Services Limited is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Trimlock Services Limited?
Trimlock Services Limited was incorporated on 20 March 2013, 13 years ago.
Has Trimlock Services Limited won public sector contracts?
Yes. Trimlock Services Limited has 2 contract awards from public bodies on Contracts Finder and Find a Tender (those with their own published value total £40K), most recently from London Borough of Harrow.
What is the penalty if Trimlock Services 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 Trimlock Services 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.