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- CRTB Limited
Company profile · Electricians
CRTB Limited
CRTB Limited is a 17-year-old private limited company registered in Luton, company number 06788051, one of 185 electrical contractors in Luton. Its next accounts are due at Companies House on 31 October 2027, and the CT600 for the period to 31 January 2027 is due at HMRC on 31 January 2028.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Financial snapshot, 2026
From the balance sheet at 31 January 2026, as filed at Companies House.
CRTB 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 £2,664 (+11.5%) on the year before, to £26K.
- Net assets rose in 6 of 9 year-on-year comparisons on record.
- Current assets of £47K against £36K owed within a year: 1.3 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 |
|---|---|---|---|---|---|
| 31 Jan 2026 | £26K | £47K | £36K | 2 | |
| 31 Jan 2025 | £23K | £44K | £36K | 2 | |
| 31 Jan 2024 | £7,476 | £33K | £32K | 2 | |
| 31 Jan 2023 | £16K | £29K | £27K | 2 | |
| 31 Jan 2022 | £23K | £27K | £21K | 2 | |
| 31 Jan 2021 | £20K | £62K | £22K | 2 | |
| 31 Jan 2020 | £8,230 | £19K | |||
| 31 Jan 2019 | £11K | £28K | £17K | ||
| 31 Jan 2018 | £7,222 | £21K | £14K | ||
| 31 Jan 2017 | £1,902 | £9,207 | £12K |
Where CRTB Limited is registered
The registered office is in Luton (LU1), in the Luton local authority area, East of England. Show LU1 2BJ on a map.
Other trade companies in LU1
- Metalia Plastering LtdPlasterers
- Luton Bodyworks LtdMechanics and garages
- Speedyone LtdGroundworks and demolition
- Varion Construction LtdProperty developers
- Bromhams LtdMotor traders
- Vertex Home Improvements LtdRoofers
- Skillede LtdElectricians
- Avram Cleaning LtdCleaning companies
Also registered at this address
13 other companies use the same registered office as CRTB Limited.
- Aaron H Construction LtdInstallers
- B S Kalsi & Co LimitedBuilders
- Buildtech FM LtdElectricians
- Car Firm LtdMotor traders
- Dixon & Sons Construction LimitedBuilders
- Element 1 Engineering LtdMotor traders
- Gaslink-Co LimitedPlumbers and heating engineers
- Jimmys Tyres LimitedMechanics and garages
- JW Plumbing Services LtdPlumbers and heating engineers
- Make Green Energy LtdElectricians
- MJJ Builders LimitedBuilders
- Silver Grove Design & Build LtdProperty developers
- Stevenage Cars LimitedMotor traders
What happens if CRTB 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 31 October 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Nov 2027 to 30 Nov 2027 | £150 |
| 1 to 3 months late | 1 Dec 2027 to 31 Jan 2028 | £375 |
| 3 to 6 months late | 1 Feb 2028 to 30 Apr 2028 | £750 |
| More than 6 months late | From 1 May 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Feb 2028 | £200 |
| 3 months late | 30 Apr 2028 | another £200 |
| 6 months late | 31 Jul 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jan 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
- 06788051
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 12 January 2009 (17 years ago)
- Registered office
- 11 George Street West, Luton, Bedfordshire, LU1 2BJ
- Nature of business
- Electrical installation (SIC 43210)
- Year end
- 31 January (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 January 2026
- Last confirmation statement
- 12 January 2026
Filing notes for electrical contractors
Electrical contracting companies are often a director plus a van and tools. Most fall within the micro-entity rules, so the accounts filed at Companies House are short, and the CT600 carries the tax detail.
Similar companies in Luton
Other active electrical contractors registered in Luton.
- Ctjvs Limited2026
- Cubix Services Limited2019
- D&Dlogistix Ltd2025
- Dan Crick Electrical Limited2018
- Decent Electrical Limited2007
- Dni Data & Electrical Installations Limited2009
- Dod Electrical Limited2019
- Dynamic National Asset Services Ltd2024
All electrical contractors in Luton · All trades in Luton · Electricians across the UK
Frequently asked questions
When are CRTB Limited's accounts due?
CRTB Limited's next accounts are due at Companies House by 31 October 2027 (in 384 days), covering the period to 31 January 2027.
When is CRTB Limited's CT600 due?
The CT600 for the period to 31 January 2027 is due at HMRC by 31 January 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 November 2027.
Is CRTB Limited still trading?
CRTB 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 CRTB Limited do?
CRTB Limited is registered under Electrical installation (SIC 43210).
How old is CRTB Limited?
CRTB Limited was incorporated on 12 January 2009, 17 years ago.
What is the penalty if CRTB 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 CRTB 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.