- Companies
- Cleaning companies
- Beverley
- Castium Limited
Castium Limited
- Company number
- 07765094
- Incorporated
- 7 Sep 201115 years trading
- Registered office
- 6 Riverview Road, Beverley, East Yorkshire, HU17 0LD
- Nature of business
- Other building and industrial cleaning activities
Castium Limited is a 15-year-old private limited company registered in Beverley, company number 07765094, one of 18 cleaning companies in Beverley. Its next accounts are due at Companies House on 30 June 2027, and the CT600 for the period to 30 September 2026 is due at HMRC on 30 September 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 up £874K (+306.3%) on the year before, to £1.2M.
- Net assets rose in 7 of 9 year-on-year comparisons on record.
- Current assets of £1.2M against £430K owed within a year: 2.9 times cover.
- 42 employees on average, up from 24 the year before.
- 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 |
|---|---|---|---|---|---|
| 30 Sep 2025 | £1.2M | £239K | £1.2M | £430K | 42 |
| 30 Sep 2024 | £285K | £1,075 | £208K | £148K | 24 |
| 30 Sep 2023 | £588K | £98K | £461K | £85K | 18 |
| 30 Sep 2022 | £437K | £324K | £389K | £73K | 15 |
| 30 Sep 2021 | £228K | £157K | £250K | £79K | 14 |
| 30 Sep 2020 | £113K | £41K | £116K | £29K | 11 |
| 30 Sep 2019 | £40K | £1,932 | £103K | £97K | 13 |
| 30 Sep 2018 | £31K | £46K | £34K | ||
| 30 Sep 2017 | £62K | £31K | £48K | £9,821 | |
| 30 Sep 2016 | £52K | £112K | £78K |
Public contracts won
Castium Limited has 4 public sector contract awards on record; the ones with their own published value total £724K, from 2021 to 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.
Awards by year
Main buyers
- Bip Solutions Limited1 award
- Secretary of State for Health and Social Care acting as part of the Crown through UK Health Security Agency1 award
- UK Health Security Agency1 award
- Department of Health and Social Care (T&T)1 award
| Buyer | Contract | Value | Awarded |
|---|---|---|---|
| Bip Solutions Limited | GB-London: UKRI-2383 LMS Cleaning and Decontamination service | £33K | 12 Aug 2022 |
| Secretary of State for Health and Social Care acting as part of the Crown through UK Health Security Agency | Vaporised Hydrogen Peroxide Sterilisation Service for Leamington Spa Lab | £375K | 29 Nov 2021 |
| UK Health Security Agency | Vaporised Hydrogen Peroxide Sterilisation Services | £250K | 29 Nov 2021 |
| Department of Health and Social Care (T&T) | Supply of a decontamination service at the Leamington Spa Laboratory | £67K | 11 Mar 2021 |
Where Castium Limited is registered
The registered office is in Beverley (HU17), in the East Riding of Yorkshire local authority area, Yorkshire and The Humber. Show HU17 0LD on a map.
Other trade companies in HU17
- Chapel Farm Holdings LtdGroundworks and demolition
- Cardizz LtdMechanics and garages
- Allure Experiences LtdProperty developers
- PMX Properties LtdProperty developers
- Omni Construction LtdProperty developers
- Adbex Projects LtdMechanics and garages
- Unique Paving and Driveways LtdInstallers
- Timbercare Tree & Grounds Maintenance Services LtdLandscapers and gardeners
Also registered at this address
1 other company uses the same registered office as Castium Limited.
- Labtack LtdFloor and wall tilers
What happens if Castium 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 June 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jul 2027 to 31 Jul 2027 | £150 |
| 1 to 3 months late | 1 Aug 2027 to 30 Sep 2027 | £375 |
| 3 to 6 months late | 1 Oct 2027 to 31 Dec 2027 | £750 |
| More than 6 months late | From 1 Jan 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Oct 2027 | £200 |
| 3 months late | 30 Dec 2027 | another £200 |
| 6 months late | 30 Mar 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Sep 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
- 07765094
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 7 September 2011 (15 years ago)
- Registered office
- 6 Riverview Road, Beverley, East Yorkshire, HU17 0LD
- Nature of business
- Other building and industrial cleaning activities (SIC 81229)
- Year end
- 30 September (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 September 2025
- Last confirmation statement
- 7 September 2026
- Charges (mortgages)
- 2 outstanding of 2 registered
- Previous names
- Mosconis Advanced Cleaning Systems Limited (until 24 May 2013)
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 Beverley
Other active cleaning companies registered in Beverley.
- Coupe Deuce Ltd2015
- Couperman Ltd2014
- Elite Pest Control (UK) Ltd2022
- GRPL Cleaning Services Ltd2020
- JHD Assets Limited2025
- Kingston Cleaning Services (Hull) Limited2006
- KK Maintenance Hull Ltd2022
- Purity Pro Group Ltd2026
All cleaning companies in Beverley · All trades in Beverley · Cleaning companies across the UK
Frequently asked questions
When are Castium Limited's accounts due?
Castium Limited's next accounts are due at Companies House by 30 June 2027 (in 261 days), covering the period to 30 September 2026.
When is Castium Limited's CT600 due?
The CT600 for the period to 30 September 2026 is due at HMRC by 30 September 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 July 2027.
Is Castium Limited still trading?
Castium 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 Castium Limited do?
Castium Limited is registered under Other building and industrial cleaning activities (SIC 81229).
How old is Castium Limited?
Castium Limited was incorporated on 7 September 2011, 15 years ago.
Has Castium Limited won public sector contracts?
Yes. Castium Limited has 4 contract awards from public bodies on Contracts Finder and Find a Tender (those with their own published value total £724K), most recently from BIP SOLUTIONS LIMITED.
What is the penalty if Castium 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 Castium 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.