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- Mastic Mums Ltd
Company profile · Finishing trades
Mastic Mums Ltd
Mastic Mums Ltd is a 1-year-old private limited company registered in Sutton, company number 16459743, one of 115 building finishing companies in Sutton. Its next accounts are due at Companies House on 19 February 2027, and its first CT600 is due at HMRC on 18 May 2027.
Key dates
This company has not filed accounts yet. First accounts are due 21 months after incorporation, and the first period can run longer than a year.
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Where Mastic Mums Ltd is registered
The registered office is in Sutton (SM1), in the Sutton local authority area, London. Show SM1 1SB on a map.
Other trade companies in SM1
- GML Landscaping & Tree Care LtdLandscapers and gardeners
- Alfa Sprint LtdMechanics and garages
- Roadside Help LtdMotor traders
- Pivotal Cleaning LtdCleaning companies
- Patchs Builder LimitedFinishing trades
- Leo Windows LimitedGlaziers
- MJG Motorworks LtdMechanics and garages
- Macgregor Landscapes and Gardens LtdLandscapers and gardeners
Also registered at this address
1 other company uses the same registered office as Mastic Mums Ltd.
- C A Plastering & Rendering LtdPlasterers
What happens if Mastic Mums Ltd 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 19 February 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 20 Feb 2027 to 19 Mar 2027 | £150 |
| 1 to 3 months late | 20 Mar 2027 to 19 May 2027 | £375 |
| 3 to 6 months late | 20 May 2027 to 19 Aug 2027 | £750 |
| More than 6 months late | From 20 Aug 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jun 2027 | £200 |
| 3 months late | 31 Aug 2027 | another £200 |
| 6 months late | 30 Nov 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 May 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
- 16459743
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 19 May 2025 (1 year ago)
- Registered office
- 14 Crown Road, Sutton, SM1 1SB
- Nature of business
- Other building completion and finishing (SIC 43390)
- Year end
- 31 May (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 18 May 2026
- Previous names
- Mastic Mums Ltd Ltd (until 28 Oct 2025)
Filing notes for building finishing companies
Finishing trade companies cover a wide range of work. Most are micro-entities with simple accounts and a straightforward CT600.
Similar companies in Sutton
Other active building finishing companies registered in Sutton.
- Matawan Limited2007
- Maxem Construction Limited2022
- McAdam Property & Building Services Ltd2019
- MDT Fixing Group Ltd2020
- Merit Building Company Limited1983
- Merlin Truline Roofing Limited2004
- MKL Carpentry Ltd2025
- MM London Builders Ltd2015
All building finishing companies in Sutton · All trades in Sutton · Finishing trades across the UK
Frequently asked questions
When are Mastic Mums Ltd's accounts due?
Mastic Mums Ltd's next accounts are due at Companies House by 19 February 2027 (in 130 days), covering the period to 31 May 2026.
When is Mastic Mums Ltd's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 18 May 2026, due by 18 May 2027, and one for the period to 31 May 2026, due by 31 May 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Mastic Mums Ltd still trading?
Mastic Mums Ltd 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 Mastic Mums Ltd do?
Mastic Mums Ltd is registered under Other building completion and finishing (SIC 43390).
How old is Mastic Mums Ltd?
Mastic Mums Ltd was incorporated on 19 May 2025, 1 year ago.
What is the penalty if Mastic Mums Ltd 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 Mastic Mums Ltd 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.