- Companies
- Specialist contractors
- Leigh-on-Sea
- Hydrospec Limited
Hydrospec Limited
- Company number
- 02319035
- Incorporated
- 18 Nov 198837 years trading
- Registered office
- 57A Broadway, Leigh-on-Sea, Essex, SS9 1PE
- Nature of business
- Other specialised construction activities n.e.c.
Hydrospec Limited is a 37-year-old private limited company registered in Leigh-on-Sea, company number 02319035, one of 105 specialist construction companies in Leigh-on-Sea. Its next accounts are due at Companies House on 30 September 2027, and the CT600 for the period to 31 December 2026 is due at HMRC on 31 December 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 £1.9M (-82.7%) on the year before, to £408K.
- Net assets rose in 5 of 6 year-on-year comparisons on record.
- Current assets of £847K against £487K owed within a year: 1.7 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 7 years, 2019 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Dec 2025 | £408K | £440K | £847K | £487K | 0 |
| 31 Dec 2024 | £2.4M | £1.7M | £2.1M | £437K | 9 |
| 31 Dec 2023 | £2.2M | £1.5M | £1.9M | £345K | 9 |
| 31 Dec 2022 | £1.8M | £1.1M | £1.5M | £404K | 8 |
| 31 Dec 2021 | £1.6M | £1.1M | £205K | 10 | |
| 31 Dec 2020 | £1.5M | £953K | £208K | 10 | |
| 31 Dec 2019 | £1M | £531K | £209K | 10 |
Public contracts won
Hydrospec Limited has 4 public sector contract awards on record; the ones with their own published value total £856K, from 2025 to 2026. Source: Contracts Finder and Find a Tender award notices. 1 of these were matched by the company's exact name because the notice gave no company number.
Awards by year
Main buyers
- Braintree District Council2 awards
- Castle Point Borough Council1 award
- London Borough of Tower Hamlets1 award
| Buyer | Contract | Value | Awarded |
|---|---|---|---|
| Braintree District Council | Witham Leisure Centre | £65K | 2 Mar 2026 |
| Castle Point Borough Council | Runnymede Leisure Centre Filter Media Replacement | 16 Dec 2025 | |
| London Borough of Tower Hamlets | CS6087 - Stephen Hawking's Hydrotherapy Pool Replacement | £718K | 7 Jul 2025 |
| Braintree District Council | GB-Thundersley: EPP0147 Swimming Pool Plant at Waterside Farm Leisure Centre | £74K | 15 Jan 2025 |
Where Hydrospec Limited is registered
The registered office is in Leigh-on-Sea (SS9), in the Southend-on-Sea local authority area, East of England. Show SS9 1PE on a map.
Other trade companies in SS9
- Cheap Locksmith Essex LtdRepair services
- Alexander Hall Real Estate LtdProperty developers
- Britannia Roofing & Dampproofing LtdRoofers
- Elite Build & Co (Essex) LtdBuilders
- High Lift Scaffold LimitedScaffolders
- Hill's Plumbing, Heating & Gas LtdPlumbers and heating engineers
- MTS Piling LimitedSpecialist contractors
- Install & Transport LimitedMachinery repair and installation
Shared registered office
148 companies on our pages use this registered office address. An address shared this widely is usually an accountant's office or a company formation agent's service address, not where the business trades from.
What happens if Hydrospec 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 September 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Oct 2027 to 31 Oct 2027 | £150 |
| 1 to 3 months late | 1 Nov 2027 to 31 Dec 2027 | £375 |
| 3 to 6 months late | 1 Jan 2028 to 31 Mar 2028 | £750 |
| More than 6 months late | From 1 Apr 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jan 2028 | £200 |
| 3 months late | 31 Mar 2028 | another £200 |
| 6 months late | 30 Jun 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Dec 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
- 02319035
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 18 November 1988 (37 years ago)
- Registered office
- 57A Broadway, Leigh-on-Sea, Essex, SS9 1PE
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 31 December (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 December 2025
- Last confirmation statement
- 17 December 2025
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 Leigh-on-Sea
Other active specialist construction companies registered in Leigh-on-Sea.
- Ibuild Interior Services Limited2016
- Industrial Pipework Services Limited2006
- Inner London Construction Limited2024
- Ivy Fire Protection Ltd2024
- J A Carr Engineering Ltd2016
- J.D. Wyatt Limited2003
- Jackson (Plant Hire) Limited1958
- Jones Stone Services Ltd2014
All specialist construction companies in Leigh-on-Sea · All trades in Leigh-on-Sea · Specialist contractors across the UK
Frequently asked questions
When are Hydrospec Limited's accounts due?
Hydrospec Limited's next accounts are due at Companies House by 30 September 2027 (in 353 days), covering the period to 31 December 2026.
When is Hydrospec Limited's CT600 due?
The CT600 for the period to 31 December 2026 is due at HMRC by 31 December 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 October 2027.
Is Hydrospec Limited still trading?
Hydrospec 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 Hydrospec Limited do?
Hydrospec Limited is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Hydrospec Limited?
Hydrospec Limited was incorporated on 18 November 1988, 37 years ago.
Has Hydrospec Limited won public sector contracts?
Yes. Hydrospec Limited has 4 contract awards from public bodies on Contracts Finder and Find a Tender (those with their own published value total £856K), most recently from Braintree District Council.
What is the penalty if Hydrospec 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 Hydrospec 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.