- Companies
- Specialist contractors
- Potters Bar
- Guardian Monitoring Services Limited
Guardian Monitoring Services Limited
- Company number
- 16588120
- Incorporated
- 17 Jul 20251 year trading
- Registered office
- Unit2, 32-34 Station Close, Potters Bar, Hertfordshire, EN6 1TL
- Nature of business
- Other specialised construction activities n.e.c.; Combined facilities support activities
Guardian Monitoring Services Limited is a 1-year-old private limited company registered in Potters Bar, company number 16588120, one of 28 specialist construction companies in Potters Bar. 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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Financial snapshot, 2026
From the balance sheet at 31 July 2026, as filed at Companies House.
Where Guardian Monitoring Services Limited is registered
The registered office is in Potters Bar (EN6), in the Hertsmere local authority area, East of England. Show EN6 1TL on a map.
Other trade companies in EN6
- Hertfordshire Roofing and Guttering Repairs LtdRoofers
- Vata RC Frames LtdSpecialist contractors
- Avanti Airtech LimitedPlumbers and heating engineers
- Azmaj Group LtdFinishing trades
- Burbridge Roofing and Build LtdBuilders
- Roman Way Holdings LtdProperty developers
- Westshire Property Services LimitedFinishing trades
- Oska Auto LtdMechanics and garages
What happens if Guardian Monitoring 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 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
- 16588120
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 17 July 2025 (1 year ago)
- Registered office
- Unit2, 32-34 Station Close, Potters Bar, Hertfordshire, EN6 1TL
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
Combined facilities support activities (SIC 81100) - Year end
- 31 July (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 July 2026
- Last confirmation statement
- 16 July 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 Potters Bar
Other active specialist construction companies registered in Potters Bar.
- Iam Construction Ltd2025
- JB Drywall Consultants Limited2025
- JCM Business Ltd2014
- Jgwy Limited2022
- L&S Construction and Utilities Limited2022
- Lkik Consulting Limited2019
- Mantoma Construction Ltd2017
- Marquee Commercial Services Ltd2026
All specialist construction companies in Potters Bar · All trades in Potters Bar · Specialist contractors across the UK
Frequently asked questions
When are Guardian Monitoring Services Limited's accounts due?
Guardian Monitoring Services Limited's next accounts are due at Companies House by 30 April 2028 (in 565 days), covering the period to 31 July 2027.
When is Guardian Monitoring Services Limited'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 Guardian Monitoring Services Limited still trading?
Guardian Monitoring 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 Guardian Monitoring Services Limited do?
Guardian Monitoring Services Limited is registered under Other specialised construction activities n.e.c. (SIC 43999); Combined facilities support activities (SIC 81100).
How old is Guardian Monitoring Services Limited?
Guardian Monitoring Services Limited was incorporated on 17 July 2025, 1 year ago.
What is the penalty if Guardian Monitoring 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 Guardian Monitoring 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.