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- Buckingham
- 3GB Limited
Company profile · Civil engineering
3GB Limited
3GB Limited is a 22-year-old private limited company registered in Buckingham, company number 04993493, one of 11 civil engineering contractors in Buckingham. Its next accounts are due at Companies House on 31 December 2026, and its first CT600 is due at HMRC on 31 December 2026.
Key dates
Worked out from the year end and filing history on the Companies House register.
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3GB 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 £11K (+43.4%) on the year before, to £37K.
- Net assets rose in 4 of 9 year-on-year comparisons on record.
- Current assets of £82K against £47K owed within a year: 1.8 times cover.
- 1 employee on average during the year.
- Balance sheets on record for 10 years, 2015 to 2024.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Dec 2024 | £37K | £82K | £47K | 1 | |
| 31 Dec 2023 | £26K | £58K | £34K | 1 | |
| 31 Dec 2022 | £15K | £52K | £37K | 1 | |
| 31 Dec 2021 | -£14K | £17K | £31K | 1 | |
| 31 Dec 2020 | -£11K | £11K | £22K | 1 | |
| 31 Dec 2019 | £7,552 | £31K | £24K | 1 | |
| 31 Dec 2018 | £5,111 | £26K | £21K | ||
| 31 Dec 2017 | £5,925 | £26K | £21K | ||
| 31 Dec 2016 | £8,137 | £27K | £19K | ||
| 31 Dec 2015 | £16K | £13K | £33K | £18K |
Where 3GB Limited is registered
The registered office is in Buckingham (MK18), in the Buckinghamshire local authority area, South East. Show MK18 1HD on a map.
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Also registered at this address
1 other company uses the same registered office as 3GB Limited.
- Auto Teck LimitedMechanics and garages
What happens if 3GB 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 December 2026.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jan 2027 to 31 Jan 2027 | £150 |
| 1 to 3 months late | 1 Feb 2027 to 31 Mar 2027 | £375 |
| 3 to 6 months late | 1 Apr 2027 to 30 Jun 2027 | £750 |
| More than 6 months late | From 1 Jul 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Apr 2027 | £200 |
| 3 months late | 30 Jun 2027 | another £200 |
| 6 months late | 30 Sep 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 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
- 04993493
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 12 December 2003 (22 years ago)
- Registered office
- Chandos House, School Lane, Buckingham, Bucks, MK18 1HD
- Nature of business
- Construction of other civil engineering projects n.e.c. (SIC 42990)
- Year end
- 31 December (accounting reference date)
- Accounts type
- Micro-entity
- Last accounts made up to
- 31 December 2024
- Last confirmation statement
- 12 December 2025
Filing notes for civil engineering contractors
Civil engineering contractors usually carry plant and machinery, so capital allowances (the annual investment allowance and the main pool) do much of the work in the corporation tax computation.
Similar companies in Buckingham
Other active civil engineering contractors registered in Buckingham.
- Crawford Countryside Services Ltd2024
- Electricity Network Contractors Limited2017
- MCMR Limited2012
- Reliant Specialist Ltd2026
- Rsa Contract Services Ltd2005
- Rykirst Construction Ltd2006
- S J Humphrey Agricultural Buildings Ltd2009
- Sandcastle Builders Ltd1986
All civil engineering contractors in Buckingham · All trades in Buckingham · Civil engineering across the UK
Frequently asked questions
When are 3GB Limited's accounts due?
3GB Limited's next accounts are due at Companies House by 31 December 2026 (in 80 days), covering the period to 31 March 2026.
When is 3GB Limited's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 31 December 2025, due by 31 December 2026, and one for the period to 31 March 2026, due by 31 March 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is 3GB Limited still trading?
3GB 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 3GB Limited do?
3GB Limited is registered under Construction of other civil engineering projects n.e.c. (SIC 42990).
How old is 3GB Limited?
3GB Limited was incorporated on 12 December 2003, 22 years ago.
What is the penalty if 3GB 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 3GB 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.