- Company number
- 07804966
- Incorporated
- 11 Oct 201115 years trading
- Registered office
- 31 - 33 Fortune Green Road, London, NW6 1DU
- Nature of business
- Construction of domestic buildings
Proficiency Design & Build Ltd is a 15-year-old private limited company registered in London, company number 07804966, one of 12,075 building contractors in London. Its next accounts are due at Companies House on 31 January 2027, and the CT600 for the period to 30 April 2026 is due at HMRC on 30 April 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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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 £107K (+17.3%) on the year before, to £724K.
- Net assets rose in 8 of 9 year-on-year comparisons on record.
- Current assets of £1.3M against £808K owed within a year: 1.6 times cover.
- 11 employees on average, up from 9 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 |
|---|---|---|---|---|---|
| 30 Apr 2025 | £724K | £214K | £1.3M | £808K | 11 |
| 30 Apr 2024 | £617K | £16K | £1.2M | £710K | 9 |
| 30 Apr 2023 | £509K | £276K | £1.1M | £527K | 11 |
| 31 Oct 2022 | £316K | £259K | £961K | £555K | 10 |
| 31 Oct 2021 | £223K | £48K | £451K | £272K | 10 |
| 31 Oct 2020 | £60K | £110K | £141K | £115K | 7 |
| 31 Oct 2019 | £536 | £2,224 | £143K | £221K | 5 |
| 31 Oct 2018 | £71 | £6,865 | £149K | £216K | 8 |
| 31 Oct 2017 | £20 | £8,482 | £63K | £125K | 0 |
| 31 Oct 2016 | £24 | £18K | £57K | £60K |
Where Proficiency Design & Build Ltd is registered
The registered office is in London (NW6), in the Camden local authority area, London. Show NW6 1DU on a map.
Other trade companies in NW6
- MJC Performance LtdMechanics and garages
- Diamond Alloys LimitedMechanics and garages
- Vaglouk LtdFacilities management
- Velmont Construction LtdInstallers
- Prime Build Roofing LimitedRoofers
- Mannyservices LtdFloor and wall tilers
- Pureguard London LtdCleaning companies
- Ace Body Work LimitedMechanics and garages
Also registered at this address
2 other companies use the same registered office as Proficiency Design & Build Ltd.
- Proficiency Group LtdBuilders
- Proficiency Property LtdBuilders
What happens if Proficiency Design & Build 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 January 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Feb 2027 to 28 Feb 2027 | £150 |
| 1 to 3 months late | 1 Mar 2027 to 30 Apr 2027 | £375 |
| 3 to 6 months late | 1 May 2027 to 31 Jul 2027 | £750 |
| More than 6 months late | From 1 Aug 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 May 2027 | £200 |
| 3 months late | 30 Jul 2027 | another £200 |
| 6 months late | 30 Oct 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 30 Apr 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
- 07804966
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 11 October 2011 (15 years ago)
- Registered office
- 31 - 33 Fortune Green Road, London, NW6 1DU
- Nature of business
- Construction of domestic buildings (SIC 41202)
- Year end
- 30 April (accounting reference date)
- Accounts type
- Unaudited abridged
- Last accounts made up to
- 30 April 2025
- Last confirmation statement
- 10 June 2026
- Previous names
- Proficiency Desing & Build Ltd (until 9 May 2017)
A Builders & Decorators Ltd (until 5 May 2017)
Filing notes for building contractors
Building companies often run the Construction Industry Scheme as a contractor, a subcontractor or both. CIS deductions suffered during the year are set against the PAYE bill, and any unrecovered balance at the year end matters when the accounts are drawn up.
Similar companies in London
Other active building contractors registered in London.
- Proficiency Group Ltd2019
- Proficiency Property Ltd2019
- Proficient Builders Ltd2023
- Profinish Sealants Limited2026
- Profinix Limited2026
- Profix Maintenance Ltd2026
- Profix Property Services Ltd2023
- Profix SW Ltd2025
All building contractors in London · All trades in London · Builders across the UK
Frequently asked questions
When are Proficiency Design & Build Ltd's accounts due?
Proficiency Design & Build Ltd's next accounts are due at Companies House by 31 January 2027 (in 110 days), covering the period to 30 April 2026.
When is Proficiency Design & Build Ltd's CT600 due?
The CT600 for the period to 30 April 2026 is due at HMRC by 30 April 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 February 2027.
Is Proficiency Design & Build Ltd still trading?
Proficiency Design & Build 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 Proficiency Design & Build Ltd do?
Proficiency Design & Build Ltd is registered under Construction of domestic buildings (SIC 41202).
How old is Proficiency Design & Build Ltd?
Proficiency Design & Build Ltd was incorporated on 11 October 2011, 15 years ago.
What is the penalty if Proficiency Design & Build 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 Proficiency Design & Build 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.