- Company number
- 04118940
- Incorporated
- 4 Dec 200025 years trading
- Registered office
- 28 Levenot Close, Banbury, Oxon, OX16 4XP
- Nature of business
- Roofing activities; Public houses and bars
Isc System Buildings Limited is a 25-year-old private limited company registered in Banbury, company number 04118940, one of 21 roofing companies in Banbury. Its next accounts are due at Companies House on 30 September 2027, and the CT600 for the period to 31 December 2026 is due at HMRC on 31 December 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 £46K (+8.3%) on the year before, to £607K.
- Net assets rose in 6 of 9 year-on-year comparisons on record.
- Current assets of £633K against £85K owed within a year: 7.4 times cover.
- 1 employee on average during the year.
- 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 |
|---|---|---|---|---|---|
| 31 Dec 2025 | £607K | £521K | £633K | £85K | 1 |
| 31 Dec 2024 | £561K | £499K | £670K | £177K | 1 |
| 31 Dec 2023 | £383K | £283K | £492K | £174K | 1 |
| 31 Dec 2022 | £345K | £258K | £430K | £104K | 1 |
| 31 Dec 2021 | £289K | £273K | £377K | £113K | 1 |
| 31 Dec 2020 | £127K | £150K | £190K | £95K | 1 |
| 31 Dec 2019 | £105K | £112K | £182K | £108K | 1 |
| 31 Dec 2018 | £109K | £162K | £86K | 3 | |
| 31 Dec 2017 | £132K | £202K | £90K | ||
| 31 Dec 2016 | £148K | £219K | £98K |
Where Isc System Buildings Limited is registered
The registered office is in Banbury (OX16), in the Cherwell local authority area, South East. Show OX16 4XP on a map.
Other trade companies in OX16
- Crystal Clear External Solutions LtdCleaning companies
- FCJ 77 LtdInstallers
- Greci Auto Care LimitedMechanics and garages
- Kerby's Cleaning Solutions LtdCleaning companies
- Oxon Mots LtdMechanics and garages
- Prime Zych LtdMechanics and garages
- B. Gill’S Construction LtdBuilders
- Oxtuneclub LtdMechanics and garages
What happens if Isc System Buildings 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 September 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Oct 2027 to 31 Oct 2027 | £150 |
| 1 to 3 months late | 1 Nov 2027 to 31 Dec 2027 | £375 |
| 3 to 6 months late | 1 Jan 2028 to 31 Mar 2028 | £750 |
| More than 6 months late | From 1 Apr 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jan 2028 | £200 |
| 3 months late | 31 Mar 2028 | another £200 |
| 6 months late | 30 Jun 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Dec 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
- 04118940
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 4 December 2000 (25 years ago)
- Registered office
- 28 Levenot Close, Banbury, Oxon, OX16 4XP
- Nature of business
- Roofing activities (SIC 43910)
Public houses and bars (SIC 56302) - Year end
- 31 December (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 December 2025
- Last confirmation statement
- 7 November 2025
Filing notes for roofing companies
Roofing companies commonly work under CIS and run vans and access equipment, so CIS deductions and capital allowances are the two things to get right.
Similar companies in Banbury
Other active roofing companies registered in Banbury.
- Olde England Roofs Ltd2026
- Peoples Roofing Limited2026
- Roof & Tool Solutions Limited2002
- Silman Jones Master Thatchers Ltd2021
- Stuart Viggers Master Thatchers Limited2015
- The Master Thatchers Limited2025
- 4Shires Commercial Maintenance Limited2024
- Affinity Roofing Banbury Ltd2025
All roofing companies in Banbury · All trades in Banbury · Roofers across the UK
Frequently asked questions
When are Isc System Buildings Limited's accounts due?
Isc System Buildings Limited's next accounts are due at Companies House by 30 September 2027 (in 353 days), covering the period to 31 December 2026.
When is Isc System Buildings Limited's CT600 due?
The CT600 for the period to 31 December 2026 is due at HMRC by 31 December 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 October 2027.
Is Isc System Buildings Limited still trading?
Isc System Buildings 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 Isc System Buildings Limited do?
Isc System Buildings Limited is registered under Roofing activities (SIC 43910); Public houses and bars (SIC 56302).
How old is Isc System Buildings Limited?
Isc System Buildings Limited was incorporated on 4 December 2000, 25 years ago.
What is the penalty if Isc System Buildings 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 Isc System Buildings 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.