- Companies
- Property developers
- Northwood
- Doc & Mason Ltd
Doc & Mason Ltd
- Company number
- 11346718
- Incorporated
- 4 May 20188 years trading
- Registered office
- 53 Russell Road, Northwood, Middlesex, HA6 2LP
- Nature of business
- Development of building projects; Other letting and operating of own or leased real estate; Management of real estate on a fee or contract basis
Doc & Mason Ltd is a 8-year-old private limited company registered in Northwood, company number 11346718, one of 76 property development companies in Northwood. Its next accounts are due at Companies House on 31 December 2026, and the CT600 for the period to 31 March 2026 is due at HMRC on 31 March 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 £31K (+124.4%) on the year before, to £57K.
- Net assets rose in 5 of 7 year-on-year comparisons on record.
- Current assets of £564K against £522K owed within a year: 1.1 times cover.
- 2 employees on average during the year.
- Balance sheets on record for 8 years, 2019 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2025 | £57K | £564K | £522K | 2 | |
| 31 Mar 2024 | £25K | £509K | £499K | 2 | |
| 31 Mar 2023 | £13K | £484K | £486K | 2 | |
| 31 Mar 2022 | £86 | £36K | £51K | 2 | |
| 31 Mar 2021 | -£21K | £15K | £52K | 2 | |
| 31 Mar 2020 | £4,379 | £36K | £47K | 2 | |
| 31 Mar 2019 | £2,344 | £25K | £36K | ||
| 30 Mar 2019 | £2,344 | £25K | £36K | 2 |
Who runs and owns Doc & Mason Ltd
From the Companies House register. Individuals are shown by initials only; the full register is on Companies House.
Officers (3)
| Name | Role | Appointed |
|---|---|---|
| J*** T*** | Director | May 2018 |
| S*** B*** | Director | Mar 2026 |
| D*** T*** | Secretary | Sep 2018 |
Person with significant control
Where Doc & Mason Ltd is registered
The registered office is in Northwood (HA6), in the Three Rivers local authority area, East of England. Show HA6 2LP on a map.
Other trade companies in HA6
- Alexastef LimitedBuilders
- Brill (Rural Property) LimitedProperty developers
- Roblar LimitedBuilders
- Compare My Cleaning Quotes LtdCleaning companies
- Cheshire Developments Group LtdProperty developers
- Elite London Cleaning LtdCleaning companies
- Melylar Render LtdBuilders
- Avidity Air Conditioning LtdPlumbers and heating engineers
Also registered at this address
1 other company uses the same registered office as Doc & Mason Ltd.
- Thakkar Specialist Services LtdBuilders
What happens if Doc & Mason 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 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2027 to 31 Jan 2027 | £150 |
| 1 to 3 months late | 1 Feb 2027 to 31 Mar 2027 | £375 |
| 3 to 6 months late | 1 Apr 2027 to 30 Jun 2027 | £750 |
| More than 6 months late | From 1 Jul 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2027 | £200 |
| 3 months late | 30 Jun 2027 | another £200 |
| 6 months late | 30 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Mar 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
- 11346718
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 4 May 2018 (8 years ago)
- Registered office
- 53 Russell Road, Northwood, Middlesex, HA6 2LP
- Nature of business
- Development of building projects (SIC 41100)
Other letting and operating of own or leased real estate (SIC 68209)
Management of real estate on a fee or contract basis (SIC 68320) - Year end
- 31 March (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 9 June 2026
Filing notes for property development companies
Many property development companies are single-project vehicles. Stock of land and buildings sits on the balance sheet as work in progress until sale, and a company that has finished its project may become dormant rather than close.
Similar companies in Northwood
Other active property development companies registered in Northwood.
- DPK Contractors Limited2001
- Eaglefield Holdings Limited2024
- Eaglefield Limited2016
- Gencoe Properties Limited2006
- Glaston Properties Limited2002
- Gracechurch Sports Management Limited2002
- Grass Development Ltd2012
- Hallowell Road Residents Association Limited1993
All property development companies in Northwood · All trades in Northwood · Property developers across the UK
Frequently asked questions
When are Doc & Mason Ltd's accounts due?
Doc & Mason Ltd's next accounts are due at Companies House by 31 December 2026 (in 79 days), covering the period to 31 March 2026.
When is Doc & Mason Ltd's CT600 due?
The CT600 for the period to 31 March 2026 is due at HMRC by 31 March 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 January 2027.
Is Doc & Mason Ltd still trading?
Doc & Mason 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 Doc & Mason Ltd do?
Doc & Mason Ltd is registered under Development of building projects (SIC 41100); Other letting and operating of own or leased real estate (SIC 68209); Management of real estate on a fee or contract basis (SIC 68320).
How old is Doc & Mason Ltd?
Doc & Mason Ltd was incorporated on 4 May 2018, 8 years ago.
Who runs Doc & Mason Ltd?
Doc & Mason Ltd has 2 active directors, the longest-serving appointed in May 2018. Their names and service addresses are on the Companies House register.
Who owns Doc & Mason Ltd?
One person or company has significant control of Doc & Mason Ltd: an individual (owns 75% or more of the shares).
What is the penalty if Doc & Mason 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 Doc & Mason 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.