- Companies
- Specialist contractors
- Louth
- Ross Mackay Developments Limited
Company profile · Specialist contractors
Ross Mackay Developments Limited
Ross Mackay Developments Limited is a 26-year-old private limited company registered in Louth, company number 04021944, one of 6 specialist construction companies in Louth. Its next accounts are due at Companies House on 5 January 2028, and the CT600 for the period to 5 April 2027 is due at HMRC on 5 April 2028.
Key dates
Worked out from the year end and filing history on the Companies House register.
Is this your company?
File the accounts to Companies House and the CT600 to HMRC yourself with A.X.E.L Filing. One set of questions, both filings, £49 flat. No accountant, no subscription.
File for Ross Mackay Developments LimitedOr get a reminder before each deadline
Free. We email you 60, 30, 14, 7 and 1 days before the accounts, CT600 and confirmation statement are due. Unsubscribe in one click.
Financial snapshot, 2026
From the balance sheet at 5 April 2026, as filed at Companies House.
Ross Mackay Developments Limited over the years
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 £71K (+5.3%) on the year before, to £1.4M.
- Net assets rose in 9 of 9 year-on-year comparisons on record.
- Current assets of £1M against £38K owed within a year: more than 10 times cover.
- 2 employees on average during the year.
- Balance sheets on record for 10 years, 2017 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 5 Apr 2026 | £1.4M | £1M | £38K | 2 | |
| 5 Apr 2025 | £1.3M | £628K | £4,638 | 2 | |
| 5 Apr 2024 | £1.3M | £602K | £9,656 | 2 | |
| 5 Apr 2023 | £1.3M | £593K | £10K | 2 | |
| 5 Apr 2022 | £1.3M | £630K | £9,889 | 2 | |
| 5 Apr 2021 | £1.2M | £552K | £12K | 2 | |
| 5 Apr 2020 | £1M | £356K | £3,524 | 2 | |
| 5 Apr 2019 | £930K | £296K | £11K | 3 | |
| 5 Apr 2018 | £885K | £207K | £4,624 | ||
| 5 Apr 2017 | £823K | £129K | £416 |
Where Ross Mackay Developments Limited is registered
The registered office is in Louth (LN11), in the East Lindsey local authority area, East Midlands. Show LN11 0WB on a map.
Other trade companies in LN11
- Humber Wolf Power Services LtdElectricians
- RGM Projects LtdCivil engineering
- Clean and Away LtdCleaning companies
- Louth Car Valeting LimitedCleaning companies
- Softop City LtdMotor traders
- Cleaning Warriors LimitedCleaning companies
- Knight Wilkinson Electrical Services LtdElectricians
- Matt Parr Autos LimitedMechanics and garages
What happens if Ross Mackay Developments Limited 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 5 January 2028.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 6 Jan 2028 to 5 Feb 2028 | £150 |
| 1 to 3 months late | 6 Feb 2028 to 5 Apr 2028 | £375 |
| 3 to 6 months late | 6 Apr 2028 to 5 Jul 2028 | £750 |
| More than 6 months late | From 6 Jul 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 6 Apr 2028 | £200 |
| 3 months late | 5 Jul 2028 | another £200 |
| 6 months late | 5 Oct 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 5 Apr 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
- 04021944
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 27 June 2000 (26 years ago)
- Registered office
- Unit 5 Nottingham Road, Fairfield Industrial Estate, Louth, LN11 0WB
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 5 April (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 5 April 2026
- Last confirmation statement
- 19 June 2026
- Charges (mortgages)
- 0 outstanding of 2 registered
- Previous names
- Thermotech (UK) Limited (until 6 Jul 2009)
Filing notes for specialist construction companies
Specialist contractors often work under CIS for main contractors. Retentions held back by the customer still count towards turnover once the work is done.
Similar companies in Louth
Other active specialist construction companies registered in Louth.
- ZK Flow Screed Ltd2020
- Falconwood Design and Project Management Ltd2022
- Foxhall Construction Limited2002
- Mark Stubbs Agriculture Limited2023
- MJM Building Limited2016
All specialist construction companies in Louth · All trades in Louth · Specialist contractors across the UK
Frequently asked questions
When are Ross Mackay Developments Limited's accounts due?
Ross Mackay Developments Limited's next accounts are due at Companies House by 5 January 2028 (in 450 days), covering the period to 5 April 2027.
When is Ross Mackay Developments Limited's CT600 due?
The CT600 for the period to 5 April 2027 is due at HMRC by 5 April 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 6 January 2028.
Is Ross Mackay Developments Limited still trading?
Ross Mackay Developments Limited 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 Ross Mackay Developments Limited do?
Ross Mackay Developments Limited is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Ross Mackay Developments Limited?
Ross Mackay Developments Limited was incorporated on 27 June 2000, 26 years ago.
What is the penalty if Ross Mackay Developments Limited 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 Ross Mackay Developments Limited 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.