- Companies
- Finishing trades
- Waltham Cross
- KB Mastic and Sealants Ltd
KB Mastic and Sealants Ltd
- Company number
- 16773223
- Incorporated
- 8 Oct 20251 year trading
- Registered office
- 89 Bury Green Road, Cheshunt, Waltham Cross, EN7 5AG
- Nature of business
- Other building completion and finishing
KB Mastic and Sealants Ltd is a 1-year-old private limited company registered in Waltham Cross, company number 16773223, one of 83 building finishing companies in Waltham Cross. Its next accounts are due at Companies House on 8 July 2027, and its first CT600 is due at HMRC on 7 October 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.
Is this your company?
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Where KB Mastic and Sealants Ltd is registered
The registered office is in Waltham Cross (EN7), in the Broxbourne local authority area, East of England. Show EN7 5AG on a map.
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- Tornado Group London LtdMotor traders
- Platinum Hive Decorating LimitedPlasterers
- Nexo Concept LtdProperty developers
- Outin Solutions LimitedFinishing trades
- Trulys Trees LimitedLandscapers and gardeners
What happens if KB Mastic and Sealants 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 8 July 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 9 Jul 2027 to 8 Aug 2027 | £150 |
| 1 to 3 months late | 9 Aug 2027 to 8 Oct 2027 | £375 |
| 3 to 6 months late | 9 Oct 2027 to 8 Jan 2028 | £750 |
| More than 6 months late | From 9 Jan 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Nov 2027 | £200 |
| 3 months late | 31 Jan 2028 | another £200 |
| 6 months late | 30 Apr 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Oct 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
- 16773223
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 8 October 2025 (1 year ago)
- Registered office
- 89 Bury Green Road, Cheshunt, Waltham Cross, EN7 5AG
- Nature of business
- Other building completion and finishing (SIC 43390)
- Year end
- 31 October (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 29 September 2026
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 Waltham Cross
Other active building finishing companies registered in Waltham Cross.
- KDB North Ltd2014
- Keene Contracts Ltd2019
- Kupa Builders Ltd2024
- Laurel Sales Consultancy and Coaching Ltd2019
- Luk Building Services Ltd2014
- Luxe Edition Ltd2025
- Maragh Refurbishments Ltd2024
- MJB Creative Building Contractors Ltd2021
All building finishing companies in Waltham Cross · All trades in Waltham Cross · Finishing trades across the UK
Frequently asked questions
When are KB Mastic and Sealants Ltd's accounts due?
KB Mastic and Sealants Ltd's next accounts are due at Companies House by 8 July 2027 (in 268 days), covering the period to 31 October 2026.
When is KB Mastic and Sealants 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 7 October 2026, due by 7 October 2027, and one for the period to 31 October 2026, due by 31 October 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is KB Mastic and Sealants Ltd still trading?
KB Mastic and Sealants 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 KB Mastic and Sealants Ltd do?
KB Mastic and Sealants Ltd is registered under Other building completion and finishing (SIC 43390).
How old is KB Mastic and Sealants Ltd?
KB Mastic and Sealants Ltd was incorporated on 8 October 2025, 1 year ago.
What is the penalty if KB Mastic and Sealants 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 KB Mastic and Sealants 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.