- Companies
- Joiners and carpenters
- Pinner
- SD Smart Designs Ltd
SD Smart Designs Ltd
- Company number
- 16182025
- Incorporated
- 14 Jan 20251 year trading
- Registered office
- 9 Colburn Avenue, Pinner, HA5 4PQ
- Nature of business
- Joinery installation; Glazing
SD Smart Designs Ltd is a 1-year-old private limited company registered in Pinner, company number 16182025, one of 12 joinery companies in Pinner. Its next accounts are due at Companies House on 31 October 2027, and the CT600 for the period to 31 January 2027 is due at HMRC on 31 January 2028.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Financial snapshot, 2026
From the balance sheet at 31 January 2026, as filed at Companies House.
Where SD Smart Designs Ltd is registered
The registered office is in Pinner (HA5), in the Harrow local authority area, London. Show HA5 4PQ on a map.
Other trade companies in HA5
- Elisop LtdCivil engineering
- Kite Property Management LtdBuilders
- Olivares and Hayter LtdSpecialist contractors
- Shallons Electrical LtdElectricians
- Executive Maintenance LtdFinishing trades
- Truspan LtdBuilders
- Mak Electrical Services LtdBuilders
- Bori Scaffolding LtdScaffolders
What happens if SD Smart Designs 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 31 October 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Nov 2027 to 30 Nov 2027 | £150 |
| 1 to 3 months late | 1 Dec 2027 to 31 Jan 2028 | £375 |
| 3 to 6 months late | 1 Feb 2028 to 30 Apr 2028 | £750 |
| More than 6 months late | From 1 May 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Feb 2028 | £200 |
| 3 months late | 30 Apr 2028 | another £200 |
| 6 months late | 31 Jul 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jan 2029 | 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
- 16182025
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 14 January 2025 (1 year ago)
- Registered office
- 9 Colburn Avenue, Pinner, HA5 4PQ
- Nature of business
- Joinery installation (SIC 43320)
Glazing (SIC 43342) - Year end
- 31 January (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 January 2026
- Last confirmation statement
- 13 January 2026
- Previous names
- A Design and Construction Ltd (until 21 Jan 2025)
Filing notes for joinery companies
Joinery companies can carry stock and work in progress at the year end, especially bespoke workshop work, and that figure moves the profit for the year.
Similar companies in Pinner
Other active joinery companies registered in Pinner.
- Sehmbi Interior Design Limited2026
- Urban Style Interiors Limited2021
- Ashtex Limited1998
- BTS Interiors Ltd2017
- CH Carpentry & Joinery Limited2010
- Doors & Floors Limited2024
- H & G Glazing Limited2019
- Ironwood Installations Limited2025
All joinery companies in Pinner · All trades in Pinner · Joiners and carpenters across the UK
Frequently asked questions
When are SD Smart Designs Ltd's accounts due?
SD Smart Designs Ltd's next accounts are due at Companies House by 31 October 2027 (in 384 days), covering the period to 31 January 2027.
When is SD Smart Designs Ltd's CT600 due?
The CT600 for the period to 31 January 2027 is due at HMRC by 31 January 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 November 2027.
Is SD Smart Designs Ltd still trading?
SD Smart Designs 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 SD Smart Designs Ltd do?
SD Smart Designs Ltd is registered under Joinery installation (SIC 43320); Glazing (SIC 43342).
How old is SD Smart Designs Ltd?
SD Smart Designs Ltd was incorporated on 14 January 2025, 1 year ago.
What is the penalty if SD Smart Designs 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 SD Smart Designs 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.