- Company number
- 11815278
- Incorporated
- 8 Feb 20197 years trading
- Registered office
- 16-18 the Boscombe Centre Mills Way, Amesbury, Salisbury, SP4 7SD
- Nature of business
- Construction of domestic buildings
A I Mercer & Son Limited is a 7-year-old private limited company registered in Salisbury, company number 11815278, one of 113 building contractors in Salisbury. Its next accounts are due at Companies House on 30 November 2027, and the CT600 for the period to 28 February 2027 is due at HMRC on 28 February 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 A I Mercer & Son 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.
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 down £5,476 (-81.5%) on the year before, to £1,242.
- Net assets rose in 1 of 6 year-on-year comparisons on record.
- Current assets of £25K against £32K owed within a year: 0.8 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 7 years, 2020 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 28 Feb 2026 | £1,242 | £25K | £32K | 1 | |
| 28 Feb 2025 | £6,718 | £21K | £19K | 1 | |
| 29 Feb 2024 | £32K | £39K | £28K | 1 | |
| 28 Feb 2023 | £107 | £24K | £16K | 1 | |
| 28 Feb 2022 | £243 | £23K | £17K | 1 | |
| 28 Feb 2021 | £1,144 | £14K | £11K | 1 | |
| 29 Feb 2020 | £2,532 | £8,405 | £11K | 1 |
Where A I Mercer & Son Limited is registered
The registered office is in Salisbury (SP4), in the Wiltshire local authority area, South West. Show SP4 7SD on a map.
Other trade companies in SP4
- TMC Recovery LtdMechanics and garages
- The Defender Shed LtdMotor traders
- Nice Guy Construction LimitedProperty developers
- M Portnall Engineering LtdMachinery repair and installation
- Crane Valley Construction LtdProperty developers
- J Brockway Solutions LtdProperty developers
- Jep Cleaning Services LtdCleaning companies
- RJM Maintenance LtdCleaning companies
Also registered at this address
9 other companies use the same registered office as A I Mercer & Son Limited.
- DJD PM LtdBuilders
- Emc Workforce LtdSpecialist contractors
- JCR Performance LtdMotor traders
- Laww Developments LtdBuilders
- Mossymeadow LimitedLandscapers and gardeners
- NL Flooring & Refurb LtdFloor and wall tilers
- Rombek Construction LtdFinishing trades
- Steven Hewlett Thatchers LimitedRoofers
- Woodcote Classic Cars LimitedMotor traders
What happens if A I Mercer & Son 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 30 November 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Dec 2027 to 31 Dec 2027 | £150 |
| 1 to 3 months late | 1 Jan 2028 to 29 Feb 2028 | £375 |
| 3 to 6 months late | 1 Mar 2028 to 31 May 2028 | £750 |
| More than 6 months late | From 1 Jun 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 29 Feb 2028 | £200 |
| 3 months late | 28 May 2028 | another £200 |
| 6 months late | 28 Aug 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 28 Feb 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
- 11815278
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 8 February 2019 (7 years ago)
- Registered office
- 16-18 the Boscombe Centre Mills Way, Amesbury, Salisbury, SP4 7SD
- Nature of business
- Construction of domestic buildings (SIC 41202)
- Year end
- 28 February (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 28 February 2026
- Last confirmation statement
- 7 February 2026
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 Salisbury
Other active building contractors registered in Salisbury.
- Acm Painting & Decorating Limited2013
- Ak Construction (2026) Limited2026
- Alf Construction (Southern) Ltd2026
- Alresford Building and Plumbing Ltd2020
- Avon Valley Builders Limited2020
- Aw General Builders Ltd2020
- B&F Construction Ltd2022
- Bharat Ltd2025
All building contractors in Salisbury · All trades in Salisbury · Builders across the UK
Frequently asked questions
When are A I Mercer & Son Limited's accounts due?
A I Mercer & Son Limited's next accounts are due at Companies House by 30 November 2027 (in 412 days), covering the period to 28 February 2027.
When is A I Mercer & Son Limited's CT600 due?
The CT600 for the period to 28 February 2027 is due at HMRC by 28 February 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 December 2027.
Is A I Mercer & Son Limited still trading?
A I Mercer & Son 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 A I Mercer & Son Limited do?
A I Mercer & Son Limited is registered under Construction of domestic buildings (SIC 41202).
How old is A I Mercer & Son Limited?
A I Mercer & Son Limited was incorporated on 8 February 2019, 7 years ago.
What is the penalty if A I Mercer & Son 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 A I Mercer & Son 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.