- Companies
- Plumbers and heating engineers
- Guardian Consultancy Services Limited
Guardian Consultancy Services Limited
- Company number
- 04659879
- Incorporated
- 10 Feb 200323 years trading
- Registered office
- The Loft Hill End Farm, Langley, Hertfordshire, SG4 7PT
- Nature of business
- Plumbing, heat and air-conditioning installation
Guardian Consultancy Services Limited is a 23-year-old private limited company registered in Hertfordshire, company number 04659879, one of the UK's plumbing and heating companies. Its next accounts are due at Companies House on 31 December 2026, and the CT600 for the period to 31 March 2026 is due at HMRC on 31 March 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 £138K (-19%) on the year before, to £588K.
- Net assets rose in 5 of 9 year-on-year comparisons on record.
- Current assets of £898K against £410K owed within a year: 2.2 times cover.
- 7 employees on average during the year.
- Balance sheets on record for 10 years, 2016 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2025 | £588K | £93K | £898K | £410K | 7 |
| 31 Mar 2024 | £726K | £328K | £1.1M | £460K | 7 |
| 31 Mar 2023 | £695K | £59K | £1.2M | £649K | 5 |
| 31 Mar 2022 | £577K | £122K | £1.1M | £635K | 5 |
| 31 Mar 2021 | £494K | £225K | £930K | £483K | 5 |
| 31 Mar 2020 | £479K | £239K | £831K | £475K | 5 |
| 31 Mar 2019 | £434K | £152K | £808K | £479K | 4 |
| 31 Mar 2018 | £491K | £97K | £909K | £533K | 2 |
| 31 Mar 2017 | £537K | £147K | £919K | £516K | 2 |
| 31 Mar 2016 | £620K | £231K | £799K | £357K |
Public contracts won
Guardian Consultancy Services Limited has 9 public sector contract awards on record; the ones with their own published value total £1.7M, from 2017 to 2024. 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
- City of London Corporation9 awards
| Buyer | Contract | Value | Awarded |
|---|---|---|---|
| City of London Corporation | Fire Door Inspections (south estates) | £68K | 17 Apr 2024 |
| City of London Corporation | Renew the existing bulkhead arrangements above communal corridor fire doors at York Way Estate | £40K | 8 Apr 2024 |
| City of London Corporation | Supply and installation of new communal lighting and smoke detection system | £56K | 1 Aug 2023 |
| City of London Corporation | Blake Tower - Reinstatement openings to the internal areas of 10 flats | £28K | 17 May 2023 |
| City of London Corporation | Artizan Street Library Refurbishment | Ceiling, not shown | 1 Feb 2023 |
| City of London Corporation | Frobisher Crescent - Remedial Fire Compartmentation Works | £900K | 22 Oct 2021 |
| City of London Corporation | Landlords Electrical Testing - Phase 4 CFA | £250K | 29 Oct 2019 |
| City of London Corporation | Andrewes House Conversion | £264K | 1 Dec 2017 |
| City of London Corporation | Urgent Non-Domestic Electrical Remedial Work | £100K | 3 Oct 2017 |
Where Guardian Consultancy Services Limited is registered
The registered office is in Hertfordshire (SG4), in the North Hertfordshire local authority area, East of England. Show SG4 7PT on a map.
Other trade companies in SG4
- Pro Builders LtdLandscapers and gardeners
- Pwevents Group LtdElectricians
- Strata Washrooms LimitedInstallers
- Riseup Solar LtdSpecialist contractors
- Broadview Installations LtdGlaziers
- A2B Building Services LtdBuilders
- Loci Construction LtdSpecialist contractors
- Aurum Haven Maintenance Services LtdInstallers
Also registered at this address
3 other companies use the same registered office as Guardian Consultancy Services Limited.
- Corey Contracting LimitedProperty developers
- Fletchers Building Solutions LtdProperty developers
- S.E. Carpentry LimitedJoiners and carpenters
What happens if Guardian Consultancy 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 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2027 to 31 Jan 2027 | £150 |
| 1 to 3 months late | 1 Feb 2027 to 31 Mar 2027 | £375 |
| 3 to 6 months late | 1 Apr 2027 to 30 Jun 2027 | £750 |
| More than 6 months late | From 1 Jul 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2027 | £200 |
| 3 months late | 30 Jun 2027 | another £200 |
| 6 months late | 30 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 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
- 04659879
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 10 February 2003 (23 years ago)
- Registered office
- The Loft Hill End Farm, Langley, Hertfordshire, SG4 7PT
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 March (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 13 February 2026
Filing notes for plumbing and heating companies
Plumbing and heating companies frequently work under CIS for main contractors and also directly for homeowners, so turnover can mix CIS and non-CIS income.
Similar companies
Other active plumbing and heating companies.
Frequently asked questions
When are Guardian Consultancy Services Limited's accounts due?
Guardian Consultancy Services Limited's next accounts are due at Companies House by 31 December 2026 (in 79 days), covering the period to 31 March 2026.
When is Guardian Consultancy Services Limited's CT600 due?
The CT600 for the period to 31 March 2026 is due at HMRC by 31 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2027.
Is Guardian Consultancy Services Limited still trading?
Guardian Consultancy 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 Consultancy Services Limited do?
Guardian Consultancy Services Limited is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Guardian Consultancy Services Limited?
Guardian Consultancy Services Limited was incorporated on 10 February 2003, 23 years ago.
Has Guardian Consultancy Services Limited won public sector contracts?
Yes. Guardian Consultancy Services Limited has 9 contract awards from public bodies on Contracts Finder and Find a Tender (those with their own published value total £1.7M), most recently from City of London Corporation.
What is the penalty if Guardian Consultancy 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 Consultancy 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.