- Companies
- Installers
- Welwyn Garden City
- Ultra KBB Ltd
Ultra KBB Ltd
- Company number
- 12663153
- Incorporated
- 11 Jun 20206 years trading
- Registered office
- 10A Garden Court Business Centre, Tewin Road, Welwyn Garden City, AL7 1BH
- Nature of business
- Other construction installation; Joinery installation
Ultra KBB Ltd is a 6-year-old private limited company registered in Welwyn Garden City, company number 12663153, one of 19 installation companies (insulation, lifts, shutters and similar) in Welwyn Garden City. Its next accounts are due at Companies House on 11 December 2026, and its first CT600 is due at HMRC on 11 December 2026.
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 £20K (+62.4%) on the year before, to £51K.
- Net assets rose in 3 of 3 year-on-year comparisons on record.
- Current assets of £134K against £83K owed within a year: 1.6 times cover.
- No employees reported for the latest year (directors are often not counted as employees).
- Balance sheets on record for 4 years, 2021 to 2024.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 11 Dec 2024 | £51K | £134K | £83K | 0 | |
| 11 Dec 2023 | £32K | £32K | 0 | ||
| 11 Dec 2022 | £31K | £8,435 | £39K | 2 | |
| 11 Dec 2021 | £486 | £7,960 | £7,574 | 2 |
Where Ultra KBB Ltd is registered
The registered office is in Welwyn Garden City (AL7), in the Welwyn Hatfield local authority area, East of England. Show AL7 1BH on a map.
Other trade companies in AL7
- Mechanicalwise LtdInstallers
- Azalea Services LimitedSpecialist contractors
- Malmech and Mannion LimitedMechanics and garages
- T&D Construction Group LtdFinishing trades
- Vertec Roofing and Building LtdRoofers
- Selectlane LtdMotor traders
- Af Pressure Washing LtdCleaning companies
- Jet Professional LtdCleaning companies
What happens if Ultra KBB 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 11 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 12 Dec 2026 to 11 Jan 2027 | £150 |
| 1 to 3 months late | 12 Jan 2027 to 11 Mar 2027 | £375 |
| 3 to 6 months late | 12 Mar 2027 to 11 Jun 2027 | £750 |
| More than 6 months late | From 12 Jun 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 12 Mar 2027 | £200 |
| 3 months late | 11 Jun 2027 | another £200 |
| 6 months late | 11 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 11 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
- 12663153
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 11 June 2020 (6 years ago)
- Registered office
- 10A Garden Court Business Centre, Tewin Road, Welwyn Garden City, AL7 1BH
- Nature of business
- Other construction installation (SIC 43290)
Joinery installation (SIC 43320) - Year end
- 11 December (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 11 December 2024
- Last confirmation statement
- 10 September 2026
Filing notes for installation companies (insulation, lifts, shutters and similar)
Installation companies (insulation, lifts, shutters, solar and similar) often buy stock and equipment up front, so stock at the year end and capital allowances both affect the tax bill.
Similar companies in Welwyn Garden City
Other active installation companies (insulation, lifts, shutters and similar) registered in Welwyn Garden City.
- Unique Surfaces Plus Limited2017
- Adbrook Fire Protection Ltd2026
- Build on Time Limited2010
- Cdi Drylining Limited2022
- Coletta Doors Solutions Limited2011
- DJJ Resources Ltd2024
- Drapers Blinds Limited2016
- G & B Project Solutions Limited2025
All installation companies (insulation, lifts, shutters and similar) in Welwyn Garden City · All trades in Welwyn Garden City · Installers across the UK
Frequently asked questions
When are Ultra KBB Ltd's accounts due?
Ultra KBB Ltd's next accounts are due at Companies House by 11 December 2026 (in 59 days), covering the period to 11 March 2026.
When is Ultra KBB Ltd's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 11 December 2025, due by 11 December 2026, and one for the period to 11 March 2026, due by 11 March 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Ultra KBB Ltd still trading?
Ultra KBB 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 Ultra KBB Ltd do?
Ultra KBB Ltd is registered under Other construction installation (SIC 43290); Joinery installation (SIC 43320).
How old is Ultra KBB Ltd?
Ultra KBB Ltd was incorporated on 11 June 2020, 6 years ago.
What is the penalty if Ultra KBB 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 Ultra KBB 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.