- Companies
- Specialist contractors
- Weymouth
- Flann Building Services Limited
Flann Building Services Limited
- Company number
- 04438333
- Incorporated
- 14 May 200224 years trading
- Registered office
- Chavally, Osmington, Weymouth, DT3 6PH
- Nature of business
- Other specialised construction activities n.e.c.
Flann Building Services Limited is a 24-year-old private limited company registered in Weymouth, company number 04438333, one of 31 specialist construction companies in Weymouth. Its next accounts are due at Companies House on 19 August 2027, and the CT600 for the period to 19 November 2026 is due at HMRC on 19 November 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 £2,642 (+3%) on the year before, to -£86K.
- Net assets rose in 3 of 9 year-on-year comparisons on record.
- 2 employees on average, down from 3 the year before.
- Balance sheets on record for 10 years, 2018 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 19 Nov 2025 | -£86K | £21K | 2 | ||
| 31 May 2025 | -£88K | £16K | 3 | ||
| 31 May 2024 | -£82K | £6,062 | £14K | 3 | |
| 31 May 2023 | -£61K | £58K | £40K | 3 | |
| 31 May 2022 | -£55K | £72K | £25K | 3 | |
| 31 May 2021 | -£63K | £74K | £30K | 3 | |
| 31 May 2020 | -£70K | £315 | £17K | 3 | |
| 30 May 2020 | -£70K | £315 | £17K | 3 | |
| 31 May 2019 | -£59K | £8,123 | £21K | ||
| 31 May 2018 | -£54K | £4,330 | £23K |
Where Flann Building Services Limited is registered
The registered office is in Weymouth (DT3), in the Dorset local authority area, South West. Show DT3 6PH on a map.
Other trade companies in DT3
- Nibbio Collective LimitedMotor traders
- Seaward Car Sales LimitedMotor traders
- Carolan Construct LtdBuilders
- Rogers Repointing LtdSpecialist contractors
- Sage Services Plumbing & Heating LtdPlumbers and heating engineers
- Dorset Composites LtdMachinery repair and installation
- Brown Property Developments LimitedBuilders
- Ashworth Decor LtdPainters and decorators
What happens if Flann Building Services 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 19 August 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 20 Aug 2027 to 19 Sep 2027 | £150 |
| 1 to 3 months late | 20 Sep 2027 to 19 Nov 2027 | £375 |
| 3 to 6 months late | 20 Nov 2027 to 19 Feb 2028 | £750 |
| More than 6 months late | From 20 Feb 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 20 Nov 2027 | £200 |
| 3 months late | 19 Feb 2028 | another £200 |
| 6 months late | 19 May 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 19 Nov 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
- 04438333
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 14 May 2002 (24 years ago)
- Registered office
- Chavally, Osmington, Weymouth, DT3 6PH
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 19 November (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 19 November 2025
- Last confirmation statement
- 22 August 2025
- Charges (mortgages)
- 4 outstanding of 5 registered
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 Weymouth
Other active specialist construction companies registered in Weymouth.
- Forest Renovations Limited2011
- Fraser All Terrain Contractors Limited2015
- Geotechnical and Environmental Consulting Limited2007
- Idl Building Maintenance Ltd2026
- J Flann General Builders Ltd2014
- Jordan Construction Southern Limited2015
- Mark Farwell Plant Hire Limited1994
- Mark Hardy Stonemasons Limited2014
All specialist construction companies in Weymouth · All trades in Weymouth · Specialist contractors across the UK
Frequently asked questions
When are Flann Building Services Limited's accounts due?
Flann Building Services Limited's next accounts are due at Companies House by 19 August 2027 (in 311 days), covering the period to 19 November 2026.
When is Flann Building Services Limited's CT600 due?
The CT600 for the period to 19 November 2026 is due at HMRC by 19 November 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 20 August 2027.
Is Flann Building Services Limited still trading?
Flann Building Services Limited is listed as active on the Companies House register (checked 12 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 Flann Building Services Limited do?
Flann Building Services Limited is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Flann Building Services Limited?
Flann Building Services Limited was incorporated on 14 May 2002, 24 years ago.
What is the penalty if Flann Building Services 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 Flann Building Services Limited on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 12 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.