- Companies
- Civil engineering
- Cardiff
- Mann Williams (Cardiff) Limited
Mann Williams (Cardiff) Limited
- Company number
- 08196876
- Incorporated
- 31 Aug 201214 years trading
- Registered office
- 53 Mount Stuart Square, Cardiff, CF10 5LR
- Nature of business
- Construction of other civil engineering projects n.e.c.
Mann Williams (Cardiff) Limited is a 14-year-old private limited company registered in Cardiff, company number 08196876, one of 89 civil engineering contractors in Cardiff. Its next accounts are due at Companies House on 31 May 2027, and the CT600 for the period to 31 August 2026 is due at HMRC on 31 August 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 Mann Williams (Cardiff) 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.
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 £13K (+5.7%) on the year before, to £243K.
- Net assets rose in 7 of 9 year-on-year comparisons on record.
- Current assets of £347K against £135K owed within a year: 2.6 times cover.
- 12 employees on average, down from 14 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 |
|---|---|---|---|---|---|
| 31 Aug 2025 | £243K | £110K | £347K | £135K | 12 |
| 31 Aug 2024 | £230K | £154K | £389K | £193K | 14 |
| 31 Aug 2023 | £303K | £162K | £428K | £156K | 13 |
| 31 Aug 2022 | £246K | £168K | £373K | £131K | 12 |
| 31 Aug 2021 | £240K | £438K | £197K | 10 | |
| 31 Aug 2020 | £250K | £393K | £143K | 10 | |
| 31 Aug 2019 | £184K | £296K | £112K | ||
| 31 Aug 2018 | £123K | £252K | £130K | ||
| 31 Aug 2017 | £101K | £211K | £111K | ||
| 31 Aug 2016 | £79K | £214K | £135K |
Who runs and owns Mann Williams (Cardiff) Limited
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officers (3)
| Name | Role | Appointed |
|---|---|---|
| J*** A*** | Director | Aug 2012 |
| T*** H*** | Director | Sep 2012 |
| P*** R*** | Director | Sep 2012 |
1 former officer
| Name | Role | Appointed | Left |
|---|---|---|---|
| J*** S*** | Director | Aug 2012 | Sep 2023 |
People with significant control (3)
Where Mann Williams (Cardiff) Limited is registered
The registered office is in Cardiff (CF10), in the Cardiff local authority area, Wales. Show CF10 5LR on a map.
Other trade companies in CF10
- Hudcon LtdBuilders
- Skyline Pitched and Flat Roofing LtdRoofers
- Eclipse Construction Group LtdPlasterers
- DWR Plumbing LtdPlumbers and heating engineers
- CF Glazing LtdGlaziers
- Regency Construction Group LtdProperty developers
- Qproperty Solutions LimitedFinishing trades
- Express Vehicle Services (Cardiff) LimitedMechanics and garages
What happens if Mann Williams (Cardiff) 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 May 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jun 2027 to 30 Jun 2027 | £150 |
| 1 to 3 months late | 1 Jul 2027 to 31 Aug 2027 | £375 |
| 3 to 6 months late | 1 Sep 2027 to 30 Nov 2027 | £750 |
| More than 6 months late | From 1 Dec 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Sep 2027 | £200 |
| 3 months late | 30 Nov 2027 | another £200 |
| 6 months late | 29 Feb 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Aug 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
- 08196876
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 31 August 2012 (14 years ago)
- Registered office
- 53 Mount Stuart Square, Cardiff, CF10 5LR
- Nature of business
- Construction of other civil engineering projects n.e.c. (SIC 42990)
- Year end
- 31 August (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 August 2025
- Last confirmation statement
- 31 August 2026
Filing notes for civil engineering contractors
Civil engineering contractors usually carry plant and machinery, so capital allowances (the annual investment allowance and the main pool) do much of the work in the corporation tax computation.
Similar companies in Cardiff
Other active civil engineering contractors registered in Cardiff.
- McCann & Partners Ltd2005
- McConkey Engineering Ltd2025
- Mid-Air Air Conditioning Ltd2016
- Miller Contractors (Wales) Limited1998
- NJP Consulting Engineers Limited2015
- Peachey Rail Ltd2018
- Penman Civil Engineering Limited2014
- PMS Building Consultants Limited2009
All civil engineering contractors in Cardiff · All trades in Cardiff · Civil engineering across the UK
Frequently asked questions
When are Mann Williams (Cardiff) Limited's accounts due?
Mann Williams (Cardiff) Limited's next accounts are due at Companies House by 31 May 2027 (in 231 days), covering the period to 31 August 2026.
When is Mann Williams (Cardiff) Limited's CT600 due?
The CT600 for the period to 31 August 2026 is due at HMRC by 31 August 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 June 2027.
Is Mann Williams (Cardiff) Limited still trading?
Mann Williams (Cardiff) 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 Mann Williams (Cardiff) Limited do?
Mann Williams (Cardiff) Limited is registered under Construction of other civil engineering projects n.e.c. (SIC 42990).
How old is Mann Williams (Cardiff) Limited?
Mann Williams (Cardiff) Limited was incorporated on 31 August 2012, 14 years ago.
Who runs Mann Williams (Cardiff) Limited?
Mann Williams (Cardiff) Limited has 3 active directors, the longest-serving appointed in Aug 2012. Their names and service addresses are on the Companies House register.
Who owns Mann Williams (Cardiff) Limited?
3 people or companies have significant control of Mann Williams (Cardiff) Limited: an individual (owns 25% to 50% of the shares); an individual (owns 25% to 50% of the shares); an individual (owns 25% to 50% of the shares).
What is the penalty if Mann Williams (Cardiff) 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 Mann Williams (Cardiff) 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.