- Companies
- Cleaning companies
- Clydebank
- Optimum Group Services Ltd
Optimum Group Services Ltd
- Company number
- SC723348
- Incorporated
- 16 Feb 20224 years trading
- Registered office
- Room 2 Ground Floor, Erskine House, North Avenue, Clydebank, G81 2DR
- Nature of business
- General cleaning of buildings; Specialised cleaning services; Other building and industrial cleaning activities; Other cleaning services
Optimum Group Services Ltd is a 4-year-old private limited company registered in Clydebank, company number SC723348, one of 23 cleaning companies in Clydebank. Its next accounts are due at Companies House on 30 November 2026, and the CT600 for the period to 28 February 2026 is due at HMRC on 28 February 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 £1,349 (-658%) on the year before, to -£1,554.
- Current assets of £741 against £2,045 owed within a year: 0.4 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 3 years, 2023 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 28 Feb 2025 | -£1,554 | £741 | £2,045 | 0 | |
| 29 Feb 2024 | -£205 | £760 | £929 | 0 | |
| 28 Feb 2023 | £913 | £1,627 | £464 | 0 |
Public contracts won
Optimum Group Services Ltd has 6 public sector contract awards on record; the ones with their own published value total £3.7M, from 2015 to 2021. 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.
Awards by year
Main buyers
- Public Health England5 awards
- Elmbridge Borough Council1 award
| Buyer | Contract | Value | Awarded |
|---|---|---|---|
| Public Health England | PHE_Corporate_Colindale_Design & Build of HVAC and BMS Systems Upgrades | £97K | 12 May 2021 |
| Public Health England | PHE - Corporate - Provision of New Additional Chiller and Reconfiguration of Racks and Cooling Aisle in CEF | £35K | 21 Aug 2019 |
| Public Health England | PHE - Corporate - Upgrade of HVAC 3 Port Valves | £37K | 1 Aug 2019 |
| Public Health England | PHE - Corporate - Upgrade of Air Handling Units Zone D | £71K | 5 Jul 2019 |
| Public Health England | PHE - Corporate -Design & Build of HVAC and BMS Systems Upgrades at PHE Colindale London NW9 5EQ | £2.5M | 24 Oct 2018 |
| Elmbridge Borough Council | Mechanical and Electrical Maintenance and Reactive Repairs | £955K | 31 Mar 2015 |
Where Optimum Group Services Ltd is registered
The registered office is in Clydebank (G81), in the West Dunbartonshire local authority area, Scotland. Show G81 2DR on a map.
Other trade companies in G81
- A&E Stonework LtdProperty developers
- North Construction & Utilities LtdInstallers
- Tyres 24/7 LtdMechanics and garages
- FL Jointing Solutions LimitedInstallers
- Adn Secure LtdMotor traders
- Happy Clean Homes LimitedCleaning companies
- Smiley. Tyres & Exhaust LimitedMotor traders
- G15 Automotive Services LimitedMechanics and garages
What happens if Optimum Group Services Ltd 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 November 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Dec 2026 to 31 Dec 2026 | £150 |
| 1 to 3 months late | 1 Jan 2027 to 28 Feb 2027 | £375 |
| 3 to 6 months late | 1 Mar 2027 to 31 May 2027 | £750 |
| More than 6 months late | From 1 Jun 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Mar 2027 | £200 |
| 3 months late | 28 May 2027 | another £200 |
| 6 months late | 28 Aug 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 28 Feb 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
- SC723348
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 16 February 2022 (4 years ago)
- Registered office
- Room 2 Ground Floor, Erskine House, North Avenue, Clydebank, G81 2DR
- Nature of business
- General cleaning of buildings (SIC 81210)
Specialised cleaning services (SIC 81222)
Other building and industrial cleaning activities (SIC 81229)
Other cleaning services (SIC 81299) - Year end
- 28 February (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 28 February 2025
- Last confirmation statement
- 15 February 2026
Filing notes for cleaning companies
Cleaning companies are often staff-heavy, so wages, pension contributions and the employment allowance all show up in the accounts.
Similar companies in Clydebank
Other active cleaning companies registered in Clydebank.
- Premier Valeting Care Limited2026
- Pure Sparkle Cleaners Ltd2026
- Sapphire Cleaning Specialists Ltd2026
- Shine Window Cleaning Limited2024
- Thistle FM (Scotland) Ltd2017
- Urwindowcleaner Limited2026
- Valet Car Cleaning Limited2020
- Yemmyjoe Cleaning Company Ltd2026
All cleaning companies in Clydebank · All trades in Clydebank · Cleaning companies across the UK
Frequently asked questions
When are Optimum Group Services Ltd's accounts due?
Optimum Group Services Ltd's next accounts are due at Companies House by 30 November 2026 (in 48 days), covering the period to 28 February 2026.
When is Optimum Group Services Ltd's CT600 due?
The CT600 for the period to 28 February 2026 is due at HMRC by 28 February 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 December 2026.
Is Optimum Group Services Ltd still trading?
Optimum Group Services Ltd 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 Optimum Group Services Ltd do?
Optimum Group Services Ltd is registered under General cleaning of buildings (SIC 81210); Specialised cleaning services (SIC 81222); Other building and industrial cleaning activities (SIC 81229); Other cleaning services (SIC 81299).
How old is Optimum Group Services Ltd?
Optimum Group Services Ltd was incorporated on 16 February 2022, 4 years ago.
Has Optimum Group Services Ltd won public sector contracts?
Yes. Optimum Group Services Ltd has 6 contract awards from public bodies on Contracts Finder and Find a Tender (those with their own published value total £3.7M), most recently from Public Health England.
What is the penalty if Optimum Group Services Ltd 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 Optimum Group Services Ltd 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.