- Company number
- 01014224
- Incorporated
- 14 Jun 197155 years trading
- Registered office
- 72A-80 Cattedown Road, Plymouth, PL4 0PH
- Nature of business
- Roofing activities
Southwest Mastic Asphalte Co. Limited is a 55-year-old private limited company registered in Plymouth, company number 01014224, one of 43 roofing companies in Plymouth. Its next accounts are due at Companies House on 31 March 2027, and the CT600 for the period to 30 June 2026 is due at HMRC on 30 June 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 Southwest Mastic Asphalte 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.
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 £146K (+220.2%) on the year before, to £213K.
- Net assets rose in 5 of 9 year-on-year comparisons on record.
- Current assets of £452K against £379K owed within a year: 1.2 times cover.
- 17 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 |
|---|---|---|---|---|---|
| 30 Jun 2025 | £213K | £275K | £452K | £379K | 17 |
| 30 Jun 2024 | £66K | £77K | £161K | £224K | 17 |
| 30 Jun 2023 | £69K | £113K | £254K | £302K | 13 |
| 30 Jun 2022 | £78K | £133K | £238K | £266K | 18 |
| 30 Jun 2021 | £92K | £107K | £183K | £191K | 17 |
| 30 Jun 2020 | £89K | £66K | £128K | £178K | 12 |
| 30 Jun 2019 | £109K | £59K | £137K | £169K | |
| 30 Jun 2018 | £87K | £154K | £187K | ||
| 30 Jun 2017 | £80K | £191K | £241K | ||
| 30 Jun 2016 | £71K | £31K | £160K | £222K |
Who runs and owns Southwest Mastic Asphalte Co. Limited
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officers (5)
| Name | Role | Appointed |
|---|---|---|
| A*** R*** | Director | before Apr 1991 |
| A*** R*** | Director | before Apr 1991 |
| A*** R*** | Director | May 2004 |
| L*** R*** | Director | Mar 2016 |
| A*** R*** | Secretary | before Apr 1991 |
Person with significant control
Charges (secured borrowing)
5 of 5 registered charges are outstanding. A charge is security a lender takes over a company's assets, typically for a loan, mortgage or asset finance.
| Lender | Status | Registered |
|---|---|---|
| Barclays Bank PLC | Outstanding | Nov 2004 |
| Barclays Bank PLC | Outstanding | Nov 2004 |
| Barclays Bank PLC | Outstanding | Oct 1986 |
| Barclays Bank Ltd | Outstanding | Nov 1978 |
| Barclays Bank Ltd | Outstanding | Aug 1978 |
Public contracts won
Southwest Mastic Asphalte Co. Limited has 2 public sector contract awards on record, from 2021 to 2025. Source: Contracts Finder and Find a Tender award notices. For all of them the published figure is a shared or multi-year ceiling (a framework place, a multi-supplier award, or more than a small company could hold alone), so no value is shown. These were matched by the company's exact name because the notice gave no company number.
Awards by year
Main buyers
- Devon County Council1 award
- Corserv Limited1 award
| Buyer | Contract | Value | Awarded |
|---|---|---|---|
| Devon County Council | CP2549-24: Devon and Somerset Standing List of Approved Contractors (SLoAC) 2025 | Ceiling, not shown | 4 Apr 2025 |
| Corserv Limited | Roofing Framework | Ceiling, not shown | 16 Jul 2021 |
Where Southwest Mastic Asphalte Co. Limited is registered
The registered office is in Plymouth (PL4), in the Plymouth local authority area, South West. Show PL4 0PH on a map.
Other trade companies in PL4
- Plymouth Cars SW LtdMotor traders
- Lita Formwork & Construction LtdBuilders
- Payless 1 LtdMechanics and garages
- Algar Developments LimitedJoiners and carpenters
- RJ Used Vehicles LtdMotor traders
- Commercialgasservices (ŚW) LtdPlumbers and heating engineers
- A.A.M Transport LtdSpecialist contractors
- Universe Investment Group (Market Street) LimitedProperty developers
What happens if Southwest Mastic Asphalte 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 31 March 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Apr 2027 to 30 Apr 2027 | £150 |
| 1 to 3 months late | 1 May 2027 to 30 Jun 2027 | £375 |
| 3 to 6 months late | 1 Jul 2027 to 30 Sep 2027 | £750 |
| More than 6 months late | From 1 Oct 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jul 2027 | £200 |
| 3 months late | 30 Sep 2027 | another £200 |
| 6 months late | 30 Dec 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Jun 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
- 01014224
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 14 June 1971 (55 years ago)
- Registered office
- 72A-80 Cattedown Road, Plymouth, PL4 0PH
- Nature of business
- Roofing activities (SIC 43910)
- Year end
- 30 June (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 30 June 2025
- Last confirmation statement
- 27 March 2026
- Charges (mortgages)
- 5 outstanding of 5 registered
Filing notes for roofing companies
Roofing companies commonly work under CIS and run vans and access equipment, so CIS deductions and capital allowances are the two things to get right.
Similar companies in Plymouth
Other active roofing companies registered in Plymouth.
- Southwest Roofing and Construction Ltd2026
- Stads Roofing and Solar Ltd2026
- Stay-Dry Roofing (SW) Ltd2018
- Stormforce Roofing and Maintenance Limited2003
- T.A.B Roofing Contractors Limited2024
- Tamar Roofing & Building Services Ltd2026
- Tavistock Roofing Solutions Limited2017
- W.A.G. Roofing Ltd2020
All roofing companies in Plymouth · All trades in Plymouth · Roofers across the UK
Frequently asked questions
When are Southwest Mastic Asphalte Co. Limited's accounts due?
Southwest Mastic Asphalte Co. Limited's next accounts are due at Companies House by 31 March 2027 (in 168 days), covering the period to 30 June 2026.
When is Southwest Mastic Asphalte Co. Limited's CT600 due?
The CT600 for the period to 30 June 2026 is due at HMRC by 30 June 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 April 2027.
Is Southwest Mastic Asphalte Co. Limited still trading?
Southwest Mastic Asphalte 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 Southwest Mastic Asphalte Co. Limited do?
Southwest Mastic Asphalte Co. Limited is registered under Roofing activities (SIC 43910).
How old is Southwest Mastic Asphalte Co. Limited?
Southwest Mastic Asphalte Co. Limited was incorporated on 14 June 1971, 55 years ago.
Who runs Southwest Mastic Asphalte Co. Limited?
Southwest Mastic Asphalte Co. Limited has 4 active directors, the longest-serving appointed in May 2004. Their names and service addresses are on the Companies House register.
Who owns Southwest Mastic Asphalte Co. Limited?
One person or company has significant control of Southwest Mastic Asphalte Co. Limited: an individual (owns 25% to 50% of the shares).
Has Southwest Mastic Asphalte Co. Limited won public sector contracts?
Yes. Southwest Mastic Asphalte Co. Limited has 2 contract awards from public bodies on Contracts Finder and Find a Tender, most recently from Devon County Council.
What is the penalty if Southwest Mastic Asphalte 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 Southwest Mastic Asphalte 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.