- Companies
- Specialist contractors
- Aylesbury
- Mammoth Services Ltd
Mammoth Services Ltd
- Company number
- 09453621
- Incorporated
- 23 Feb 201511 years trading
- Registered office
- 30 Station Road, Stoke Mandeville, Aylesbury, HP22 5UL
- Nature of business
- Other specialised construction activities n.e.c.
Mammoth Services Ltd is a 11-year-old private limited company registered in Aylesbury, company number 09453621, one of 85 specialist construction companies in Aylesbury. Its next accounts are due at Companies House on 28 February 2027, and the CT600 for the period to 31 May 2026 is due at HMRC on 31 May 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 £42K (+94.6%) on the year before, to £86K.
- Net assets rose in 4 of 9 year-on-year comparisons on record.
- Current assets of £140K against £104K owed within a year: 1.3 times cover.
- 6 employees on average, up from 5 the year before.
- Balance sheets on record for 10 years, 2018 to 2026.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 May 2026 | £86K | £140K | £104K | 6 | |
| 31 May 2025 | £44K | £118K | £124K | 5 | |
| 31 Mar 2024 | £60K | £118K | £99K | 4 | |
| 31 Mar 2023 | £68K | £119K | £94K | 5 | |
| 31 Mar 2022 | £52K | £126K | £72K | 5 | |
| 31 Mar 2021 | £69K | £200K | £86K | 6 | |
| 31 Mar 2020 | £18K | £89K | £63K | 4 | |
| 31 Mar 2019 | £132 | £54K | £73K | 3 | |
| 30 Mar 2019 | £132 | £54K | £73K | ||
| 31 Mar 2018 | £6,697 | £21K | £34K |
Where Mammoth Services Ltd is registered
The registered office is in Aylesbury (HP22), in the Buckinghamshire local authority area, South East. Show HP22 5UL on a map.
Other trade companies in HP22
- RZK Automotive & Recovery LtdMotor traders
- Ejp Facilities & Maintenance LimitedFacilities management
- Clearway Group Solutions LtdCleaning companies
- DM Select Motors LimitedMotor traders
- Ea 4Property LtdProperty developers
- Warner Made LtdProperty developers
- JTC Dev 1 LimitedProperty developers
- Custom Colour Coatings Group LtdMotor traders
What happens if Mammoth Services 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 28 February 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Mar 2027 to 31 Mar 2027 | £150 |
| 1 to 3 months late | 1 Apr 2027 to 31 May 2027 | £375 |
| 3 to 6 months late | 1 Jun 2027 to 31 Aug 2027 | £750 |
| More than 6 months late | From 1 Sep 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Jun 2027 | £200 |
| 3 months late | 31 Aug 2027 | another £200 |
| 6 months late | 30 Nov 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 May 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
- 09453621
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 23 February 2015 (11 years ago)
- Registered office
- 30 Station Road, Stoke Mandeville, Aylesbury, HP22 5UL
- 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 2025
- Last confirmation statement
- 23 February 2026
- Previous names
- Bestway Tree Services Ltd (until 4 Jan 2017)
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 Aylesbury
Other active specialist construction companies registered in Aylesbury.
- Mathias Brick and Flint Limited2009
- Mehow Construction Ltd2012
- MJD BMS Consultant Ltd2021
- MJL Advanced Fencing Ltd2003
- MRH Construct Limited2022
- Nick Jugaru Construction Ltd2015
- Oggy V Plumbing Ltd2015
- Onyx Basement Services Ltd2021
All specialist construction companies in Aylesbury · All trades in Aylesbury · Specialist contractors across the UK
Frequently asked questions
When are Mammoth Services Ltd's accounts due?
Mammoth Services Ltd's next accounts are due at Companies House by 28 February 2027 (in 139 days), covering the period to 31 May 2026.
When is Mammoth Services Ltd's CT600 due?
The CT600 for the period to 31 May 2026 is due at HMRC by 31 May 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 March 2027.
Is Mammoth Services Ltd still trading?
Mammoth Services 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 Mammoth Services Ltd do?
Mammoth Services Ltd is registered under Other specialised construction activities n.e.c. (SIC 43999).
How old is Mammoth Services Ltd?
Mammoth Services Ltd was incorporated on 23 February 2015, 11 years ago.
What is the penalty if Mammoth Services 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 Mammoth Services 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.