- Companies
- Civil engineering
- Buckingham
- Rykirst Construction Ltd
Rykirst Construction Ltd
- Company number
- 05907012
- Incorporated
- 15 Aug 200620 years trading
- Registered office
- 8 Elm Fields Gate, Winslow, Buckingham, Buckinghamshire, MK18 3JG
- Nature of business
- Construction of other civil engineering projects n.e.c.
Rykirst Construction Ltd is a 20-year-old private limited company registered in Buckingham, company number 05907012, one of 11 civil engineering contractors in Buckingham. Its next accounts are due at Companies House on 31 May 2027, and the CT600 for the period to 31 August 2026 is due at HMRC on 31 August 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 £131K (+39.3%) on the year before, to £464K.
- Net assets rose in 8 of 9 year-on-year comparisons on record.
- Current assets of £712K against £287K owed within a year: 2.5 times cover.
- 2 employees on average, down from 3 the year before.
- 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 Aug 2025 | £464K | £469K | £712K | £287K | 2 |
| 31 Aug 2024 | £333K | £217K | £439K | £145K | 3 |
| 31 Aug 2023 | £305K | £326K | £497K | £226K | 3 |
| 31 Aug 2022 | £191K | £171K | £356K | £187K | 3 |
| 31 Aug 2021 | £4,994 | £27K | £23K | 1 | |
| 31 Aug 2020 | £2,905 | £29K | £27K | 1 | |
| 31 Aug 2019 | £2,124 | £26K | £26K | ||
| 31 Aug 2018 | £949 | £25K | £27K | ||
| 31 Aug 2017 | £3,821 | £38K | £38K | ||
| 31 Aug 2016 | £325 | £13K | £18K | £22K |
Where Rykirst Construction Ltd is registered
The registered office is in Buckingham (MK18), in the Buckinghamshire local authority area, South East. Show MK18 3JG on a map.
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What happens if Rykirst Construction 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 31 May 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Jun 2027 to 30 Jun 2027 | £150 |
| 1 to 3 months late | 1 Jul 2027 to 31 Aug 2027 | £375 |
| 3 to 6 months late | 1 Sep 2027 to 30 Nov 2027 | £750 |
| More than 6 months late | From 1 Dec 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Sep 2027 | £200 |
| 3 months late | 30 Nov 2027 | another £200 |
| 6 months late | 29 Feb 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Aug 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
- 05907012
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 15 August 2006 (20 years ago)
- Registered office
- 8 Elm Fields Gate, Winslow, Buckingham, Buckinghamshire, MK18 3JG
- Nature of business
- Construction of other civil engineering projects n.e.c. (SIC 42990)
- Year end
- 31 August (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 August 2025
- Last confirmation statement
- 24 August 2026
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.
- S J Humphrey Agricultural Buildings Ltd2009
- Sandcastle Builders Ltd1986
- Snypr Setting Out Engineers Ltd2020
- T2TM Ltd2025
- 3GB Limited2003
- Crawford Countryside Services Ltd2024
- Electricity Network Contractors Limited2017
- MCMR Limited2012
All civil engineering contractors in Buckingham · All trades in Buckingham · Civil engineering across the UK
Frequently asked questions
When are Rykirst Construction Ltd's accounts due?
Rykirst Construction Ltd's next accounts are due at Companies House by 31 May 2027 (in 230 days), covering the period to 31 August 2026.
When is Rykirst Construction Ltd's CT600 due?
The CT600 for the period to 31 August 2026 is due at HMRC by 31 August 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 June 2027.
Is Rykirst Construction Ltd still trading?
Rykirst Construction 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 Rykirst Construction Ltd do?
Rykirst Construction Ltd is registered under Construction of other civil engineering projects n.e.c. (SIC 42990).
How old is Rykirst Construction Ltd?
Rykirst Construction Ltd was incorporated on 15 August 2006, 20 years ago.
What is the penalty if Rykirst Construction 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 Rykirst Construction 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.