- Companies
- Electricians
- Exeter
- Alarmtec Limited
Alarmtec Limited
- Company number
- 01330388
- Incorporated
- 16 Sep 197749 years trading
- Registered office
- Centenary House Peninsula Park, Rydon Lane, Exeter, EX2 7XE
- Nature of business
- Electrical installation; Other construction installation
Alarmtec Limited is a 49-year-old private limited company registered in Exeter, company number 01330388, one of 87 electrical contractors in Exeter. 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 £481K (+41.9%) on the year before, to £1.6M.
- Net assets rose in 6 of 9 year-on-year comparisons on record.
- 43 employees on average, up from 37 the year before.
- 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 | £1.6M | £1.2M | £2.8M | 43 | |
| 31 Mar 2025 | £1.1M | £1.2M | £1.4M | 37 | |
| 31 Mar 2024 | £590K | £289K | £1.2M | 38 | |
| 31 Mar 2023 | £208K | £198K | £1.1M | 38 | |
| 31 Mar 2022 | £207K | £534K | £1.5M | £1.3M | 49 |
| 31 Mar 2021 | £23K | £243K | £1.5M | £1.3M | 62 |
| 30 Sep 2020 | -£76K | £149K | £1.5M | £1.4M | 69 |
| 30 Sep 2019 | £85K | £40K | £1.3M | £1.3M | 69 |
| 30 Sep 2018 | £592K | £288 | £1.8M | £1.4M | 69 |
| 30 Sep 2017 | £767K | £138 | £1.4M | £922K | 63 |
Public contracts won
Alarmtec Limited has 3 public sector contract awards on record; the ones with their own published value total £119K, from 2020 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
- University of Exeter2 awards
- Mid Devon District Council1 award
| Buyer | Contract | Value | Awarded |
|---|---|---|---|
| University of Exeter | Harrison Building | 11 Jun 2025 | |
| Mid Devon District Council | Fire Detection Upgrade 2022 | £119K | 26 May 2022 |
| University of Exeter | Corrective and Preventative Electrical Maintenance | Ceiling, not shown | 25 Feb 2020 |
Where Alarmtec Limited is registered
The registered office is in Exeter (EX2), in the Exeter local authority area, South West. Show EX2 7XE on a map.
Other trade companies in EX2
- Drive Point Automotive LtdMotor traders
- Dent Care Exeter LtdMechanics and garages
- Reed Services LtdSpecialist contractors
- Renew Heat Southwest LtdPlumbers and heating engineers
- Roxel Constructions LimitedBuilders
- Watipa Electrics LimitedElectricians
- Solution Autobodies LtdMechanics and garages
- Abc Solutions (Exeter) LtdSpecialist contractors
Also registered at this address
22 other companies use the same registered office as Alarmtec Limited.
- Apricot LSW LimitedBuilders
- C L S (Properties) LimitedProperty developers
- CSW Groundworks LimitedGroundworks and demolition
- Gerald Dinnis LimitedMotor traders
- H & H Prestige Homes LimitedProperty developers
- Hautot Developments LimitedProperty developers
- Imc Tiling LimitedFloor and wall tilers
- J H Carnell LtdBuilders
- Joe Dunn Plant LimitedMachinery repair and installation
- M J Stevens LtdPlasterers
- Maldon Homes LimitedProperty developers
- Monopoly Partners LtdProperty developers
- P & D Developments (South West) LimitedBuilders
- Pencleave 1 LimitedProperty developers
- Pencleave 2 LimitedProperty developers
- Pokora Developments LimitedProperty developers
- RH Trading Southwest LtdMotor traders
- RHR Property (Devon) LimitedProperty developers
- Rural Life Developments LimitedProperty developers
- Solnet Group UK LimitedInstallers
- UK Road Services LtdCivil engineering
- Willett Farm Properties LtdProperty developers
What happens if Alarmtec 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
- 01330388
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 16 September 1977 (49 years ago)
- Registered office
- Centenary House Peninsula Park, Rydon Lane, Exeter, EX2 7XE
- Nature of business
- Electrical installation (SIC 43210)
Other construction installation (SIC 43290) - Year end
- 31 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 March 2026
- Last confirmation statement
- 20 February 2026
- Charges (mortgages)
- 1 outstanding of 5 registered
Filing notes for electrical contractors
Electrical contracting companies are often a director plus a van and tools. Most fall within the micro-entity rules, so the accounts filed at Companies House are short, and the CT600 carries the tax detail.
Similar companies in Exeter
Other active electrical contractors registered in Exeter.
- Alm Fire and Security Limited2025
- Amec South West Ltd2025
- Amtel Services (UK) Limited2006
- B A Housing Ltd2017
- Batchelor Electrical Limited1992
- Borland Electrical Services Limited2015
- C & O Solutions Ltd2025
- Coconut Energy Ltd2022
All electrical contractors in Exeter · All trades in Exeter · Electricians across the UK
Frequently asked questions
When are Alarmtec Limited's accounts due?
Alarmtec Limited's next accounts are due at Companies House by 31 December 2027 (in 445 days), covering the period to 31 March 2027.
When is Alarmtec 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 Alarmtec Limited still trading?
Alarmtec 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 Alarmtec Limited do?
Alarmtec Limited is registered under Electrical installation (SIC 43210); Other construction installation (SIC 43290).
How old is Alarmtec Limited?
Alarmtec Limited was incorporated on 16 September 1977, 49 years ago.
Has Alarmtec Limited won public sector contracts?
Yes. Alarmtec Limited has 3 contract awards from public bodies on Contracts Finder and Find a Tender (those with their own published value total £119K), most recently from University of Exeter.
What is the penalty if Alarmtec 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 Alarmtec 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.