- Companies
- Plumbers and heating engineers
- Polegate
- Complete Mechanical Services Co. Limited
Company profile · Plumbers and heating engineers
Complete Mechanical Services Co. Limited
Complete Mechanical Services Co. Limited is a 29-year-old private limited company registered in Polegate, company number 03280581, one of 13 plumbing and heating companies in Polegate. Its next accounts are due at Companies House on 29 December 2026, and the CT600 for the period to 29 March 2026 is due at HMRC on 29 March 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
Is this your company?
File the accounts to Companies House and the CT600 to HMRC yourself with A.X.E.L Filing. One set of questions, both filings, £49 flat. No accountant, no subscription.
File for Complete Mechanical Services Co. LimitedOr get a reminder before each deadline
Free. We email you 60, 30, 14, 7 and 1 days before the accounts, CT600 and confirmation statement are due. Unsubscribe in one click.
Financial snapshot, 2025
From the balance sheet at 31 March 2025, as filed at Companies House.
Complete Mechanical Services Co. Limited over the years
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 £36K on the year before, to £34K.
- Net assets rose in 5 of 9 year-on-year comparisons on record.
- Current assets of £170K against £94K owed within a year: 1.8 times cover.
- 2 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 | £34K | £170K | £94K | 2 | |
| 31 Mar 2024 | -£2,034 | £184K | £149K | 2 | |
| 31 Mar 2023 | £3,336 | £140K | £91K | 1 | |
| 31 Mar 2022 | £279 | £85K | £36K | 1 | |
| 31 Mar 2021 | £65K | £109K | £252K | £142K | 1 |
| 31 Mar 2020 | £139K | £105K | £321K | £185K | 3 |
| 31 Mar 2019 | £95K | £37K | £214K | £122K | |
| 31 Mar 2018 | £52K | £30K | £170K | £123K | |
| 31 Mar 2017 | £189K | £34K | £155K | £28K | |
| 31 Mar 2016 | £39K | £431 | £150K | £112K |
Where Complete Mechanical Services Co. Limited is registered
The registered office is in Polegate (BN26), in the Wealden local authority area, South East. Show BN26 5DQ on a map.
Other trade companies in BN26
- Blackford Builders & Renovations LtdSpecialist contractors
- Polegate Motor Services LtdMechanics and garages
- William Fleet LtdCivil engineering
- SL Roofing & Home Improvements LimitedRoofers
- Karma Property Development LtdFinishing trades
- Duo Clean Services LtdCleaning companies
- Sussex Tarmac LtdCivil engineering
- South Coast Control Systems LtdElectricians
What happens if Complete Mechanical Services Co. 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 29 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 30 Dec 2026 to 29 Jan 2027 | £150 |
| 1 to 3 months late | 30 Jan 2027 to 29 Mar 2027 | £375 |
| 3 to 6 months late | 30 Mar 2027 to 29 Jun 2027 | £750 |
| More than 6 months late | From 30 Jun 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 30 Mar 2027 | £200 |
| 3 months late | 29 Jun 2027 | another £200 |
| 6 months late | 29 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 29 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
- 03280581
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 19 November 1996 (29 years ago)
- Registered office
- 41 Spurway Park, Polegate, East Sussex, BN26 5DQ
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 29 March (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 19 November 2025
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 in Polegate
Other active plumbing and heating companies registered in Polegate.
- Dysons Heating Limited2013
- I J Rose Services Ltd2024
- Iconic Plumbing and Heating Ltd2015
- KGC Air Conditioning Ltd2022
- Light My Fire Stove Installations Ltd2025
- Middleton Heating and Plumbing Limited2009
- P & S Trowell Ltd2026
- Piping Hot Solutions Ltd2012
All plumbing and heating companies in Polegate · All trades in Polegate · Plumbers and heating engineers across the UK
Frequently asked questions
When are Complete Mechanical Services Co. Limited's accounts due?
Complete Mechanical Services Co. Limited's next accounts are due at Companies House by 29 December 2026 (in 78 days), covering the period to 29 March 2026.
When is Complete Mechanical Services Co. Limited's CT600 due?
The CT600 for the period to 29 March 2026 is due at HMRC by 29 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 30 December 2026.
Is Complete Mechanical Services Co. Limited still trading?
Complete Mechanical Services Co. 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 Complete Mechanical Services Co. Limited do?
Complete Mechanical Services Co. Limited is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Complete Mechanical Services Co. Limited?
Complete Mechanical Services Co. Limited was incorporated on 19 November 1996, 29 years ago.
What is the penalty if Complete Mechanical Services Co. 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 Complete Mechanical Services Co. 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.