- Companies
- Specialist contractors
- Letchworth
- Railtek Limited
Railtek Limited
- Company number
- 03346995
- Incorporated
- 8 Apr 199729 years trading
- Registered office
- 39 North Avenue, Letchworth, Hertfordshire, SG6 1DH
- Nature of business
- Other specialised construction activities n.e.c.
Railtek Limited is a 29-year-old private limited company registered in Letchworth, company number 03346995, one of the UK's specialist construction companies. Its next accounts are due at Companies House on 29 February 2028, and the CT600 for the period to 31 May 2027 is due at HMRC on 31 May 2028.
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 down £61K (-7.4%) on the year before, to £759K.
- Net assets rose in 8 of 9 year-on-year comparisons on record.
- Current assets of £823K against £86K owed within a year: 9.6 times cover.
- 5 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 May 2026 | £759K | £823K | £86K | 5 | |
| 31 May 2025 | £820K | £895K | £104K | 5 | |
| 31 May 2024 | £765K | £843K | £117K | 6 | |
| 31 May 2023 | £721K | £810K | £118K | 6 | |
| 31 May 2022 | £670K | £743K | £103K | 8 | |
| 31 May 2021 | £622K | £663K | £79K | 5 | |
| 31 May 2020 | £588K | £650K | £84K | 6 | |
| 31 May 2019 | £530K | £594K | £90K | ||
| 31 May 2018 | £460K | £509K | £83K | ||
| 31 May 2017 | £398K | £415K | £53K |
Where Railtek Limited is registered
The registered office is in Letchworth (SG6), in the North Hertfordshire local authority area, East of England. Show SG6 1DH on a map.
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What happens if Railtek 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 29 February 2028.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Mar 2028 to 31 Mar 2028 | £150 |
| 1 to 3 months late | 1 Apr 2028 to 31 May 2028 | £375 |
| 3 to 6 months late | 1 Jun 2028 to 31 Aug 2028 | £750 |
| More than 6 months late | From 1 Sep 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jun 2028 | £200 |
| 3 months late | 31 Aug 2028 | another £200 |
| 6 months late | 30 Nov 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 May 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
- 03346995
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 8 April 1997 (29 years ago)
- Registered office
- 39 North Avenue, Letchworth, Hertfordshire, SG6 1DH
- Nature of business
- Other specialised construction activities n.e.c. (SIC 43999)
- Year end
- 31 May (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 May 2026
- Last confirmation statement
- 8 April 2026
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 Letchworth
Other active specialist construction companies registered in Letchworth.
All specialist construction companies in Letchworth · All trades in Letchworth · Specialist contractors across the UK
Frequently asked questions
When are Railtek Limited's accounts due?
Railtek Limited's next accounts are due at Companies House by 29 February 2028 (in 505 days), covering the period to 31 May 2027.
When is Railtek Limited's CT600 due?
The CT600 for the period to 31 May 2027 is due at HMRC by 31 May 2028, 12 months after the period end. The corporation tax itself is payable earlier, by 1 March 2028.
Is Railtek Limited still trading?
Railtek 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 Railtek Limited do?
Railtek Limited is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Railtek Limited?
Railtek Limited was incorporated on 8 April 1997, 29 years ago.
What is the penalty if Railtek 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 Railtek 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.