- Companies
- Specialist contractors
- Renfrew
- Thomson Alarm & Communication Systems Limited
Thomson Alarm & Communication Systems Limited
- Company number
- SC146163
- Incorporated
- 27 Aug 199333 years trading
- Registered office
- Titanium 1, Kings Inch Place, Renfrew, PA4 8WF
- Nature of business
- Other specialised construction activities n.e.c.
Thomson Alarm & Communication Systems Limited is a 33-year-old private limited company registered in Renfrew, company number SC146163, one of 11 specialist construction companies in Renfrew. Its next accounts are due at Companies House on 31 October 2026, and the CT600 for the period to 31 January 2026 is due at HMRC on 31 January 2027.
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 down £83K (-18.9%) on the year before, to £356K.
- Net assets rose in 3 of 8 year-on-year comparisons on record.
- Current assets of £400K against £83K owed within a year: 4.8 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 9 years, 2017 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Jan 2025 | £356K | £44K | £400K | £83K | 0 |
| 31 Jan 2024 | £439K | £149K | £506K | £106K | 7 |
| 31 Jan 2023 | £455K | £168K | £537K | £127K | 7 |
| 31 Jan 2022 | £455K | £179K | £600K | £137K | 8 |
| 31 Jan 2021 | £451K | £117K | £526K | £119K | 11 |
| 31 Jan 2020 | £465K | £90K | £517K | £121K | 11 |
| 31 Jan 2019 | £412K | £41K | £485K | £134K | 10 |
| 31 Jan 2018 | £392K | £43K | £419K | £85K | 13 |
| 31 Jan 2017 | £405K | £48K | £453K | £113K | 16 |
Public contracts won
Thomson Alarm & Communication Systems Limited has one public sector contract award on record; the ones with their own published value total £480K (2022). Source: Contracts Finder and Find a Tender award notices. These were matched by the company's exact name because the notice gave no company number.
| Buyer | Contract | Value | Awarded |
|---|---|---|---|
| North Ayrshire Council | Installation and Maintenance of Network Cabling & Related Services | £480K | 8 Aug 2022 |
Where Thomson Alarm & Communication Systems Limited is registered
The registered office is in Renfrew (PA4), in the Renfrewshire local authority area, Scotland. Show PA4 8WF on a map.
Other trade companies in PA4
- Jointer Andy LtdElectricians
- Henck Power Solutions LtdElectricians
- SMG Maintenance Group LtdBuilders
- Gla Property Maintenance LtdCleaning companies
- Scrubz Cleaning LtdCleaning companies
- Altrix Build LimitedProperty developers
- Harrymia Inspection LimitedInstallers
- True Stones Construction LimitedBuilders
Also registered at this address
23 other companies use the same registered office as Thomson Alarm & Communication Systems Limited.
- Allanvale Land (Linlithgow) LimitedProperty developers
- Cavan Construction LimitedCivil engineering
- Circular Cooling LimitedMachinery repair and installation
- Contract Air Systems LimitedSpecialist contractors
- Excel Homes LimitedProperty developers
- G. & R. Ross LimitedPlasterers
- Henck Power Solutions LtdElectricians
- Hybrid Services (Scotland) LimitedMachinery repair and installation
- Hydroklear Services LimitedCivil engineering
- Invergair Property LimitedProperty developers
- JDPS Plumbers LimitedPlumbers and heating engineers
- JVK Residential LtdProperty developers
- Kilmacolm Regeneration Company LimitedProperty developers
- Malcolm Insulation Supplies LimitedInstallers
- Marshall Brown Architectural Systems LimitedPainters and decorators
- Maude Engineering Services LimitedCivil engineering
- Pacific Power LtdInstallers
- Perth Doorsets Ltd.Joiners and carpenters
- Sterling Hydroklear LimitedCleaning companies
- The Johnston Trading Company LtdProperty developers
- Thistle Power LtdInstallers
- Thompson P.E.G.S. LimitedMotor traders
- Underground Inspection Services LimitedSpecialist contractors
What happens if Thomson Alarm & Communication Systems 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 October 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Nov 2026 to 30 Nov 2026 | £150 |
| 1 to 3 months late | 1 Dec 2026 to 31 Jan 2027 | £375 |
| 3 to 6 months late | 1 Feb 2027 to 30 Apr 2027 | £750 |
| More than 6 months late | From 1 May 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Feb 2027 | £200 |
| 3 months late | 30 Apr 2027 | another £200 |
| 6 months late | 31 Jul 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jan 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
- SC146163
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 27 August 1993 (33 years ago)
- Registered office
- Titanium 1, Kings Inch Place, Renfrew, PA4 8WF
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 31 January (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 January 2025
- Last confirmation statement
- 31 July 2026
- Charges (mortgages)
- 3 outstanding of 3 registered
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 Renfrew
Other active specialist construction companies registered in Renfrew.
- Underground Inspection Services Limited1998
- Beardmore Building Contractors Limited1983
- Charles Burrell & Sons (Engineers) Ltd2011
- Contract Air Systems Limited1999
- Cruachan Construction Ltd2023
- Duck and Pear Ltd2019
- K & K Stone Masonry Specialists Ltd2016
- Omni Door Solutions Limited2010
All specialist construction companies in Renfrew · All trades in Renfrew · Specialist contractors across the UK
Frequently asked questions
When are Thomson Alarm & Communication Systems Limited's accounts due?
Thomson Alarm & Communication Systems Limited's next accounts are due at Companies House by 31 October 2026 (in 18 days), covering the period to 31 January 2026.
When is Thomson Alarm & Communication Systems Limited's CT600 due?
The CT600 for the period to 31 January 2026 is due at HMRC by 31 January 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 November 2026.
Is Thomson Alarm & Communication Systems Limited still trading?
Thomson Alarm & Communication Systems 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 Thomson Alarm & Communication Systems Limited do?
Thomson Alarm & Communication Systems Limited is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Thomson Alarm & Communication Systems Limited?
Thomson Alarm & Communication Systems Limited was incorporated on 27 August 1993, 33 years ago.
Has Thomson Alarm & Communication Systems Limited won public sector contracts?
Yes. Thomson Alarm & Communication Systems Limited has one contract award from public bodies on Contracts Finder and Find a Tender (those with their own published value total £480K), most recently from North Ayrshire Council.
What is the penalty if Thomson Alarm & Communication Systems 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 Thomson Alarm & Communication Systems 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.