T Mendham Building Ltd
- Company number
- 04245065
- Incorporated
- 3 Jul 200125 years trading
- Registered office
- C/O Tyrrell & Company, Unit D South Cambs Business Park, Sawston, Cambridgeshire, CB22 3JH
- Nature of business
- Construction of commercial buildings
T Mendham Building Ltd is a 25-year-old private limited company registered in Sawston, company number 04245065, one of the UK's building contractors. Companies House shows its accounts as overdue: they were due on 31 July 2026.
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 £1.1M (+953.1%) on the year before, to £1.2M.
- Net assets rose in 3 of 9 year-on-year comparisons on record.
- Current assets of £720K against £914K owed within a year: 0.8 times cover.
- 4 employees 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 Jul 2024 | £1.2M | £268K | £720K | £914K | 4 |
| 31 Jul 2023 | £113K | £0 | £731K | £484K | 4 |
| 31 Jul 2022 | £137K | £11K | £403K | £222K | 3 |
| 31 Jul 2021 | £137K | £225K | £330K | £177K | 5 |
| 31 Jul 2020 | £281K | £75K | £465K | £215K | 4 |
| 31 Jul 2019 | £255K | £21K | £705K | £492K | 4 |
| 31 Jul 2018 | £383K | £51K | £1M | £678K | 4 |
| 31 Jul 2017 | £545K | £279K | £1.3M | £763K | 3 |
| 31 Jul 2016 | £557K | £289K | £662K | £131K | |
| 31 Jul 2015 | £144K | £41K | £753K | £616K |
Where T Mendham Building Ltd is registered
The registered office is in Sawston (CB22), in the South Cambridgeshire local authority area, East of England. Show CB22 3JH on a map.
Other trade companies in CB22
- Forgecambs LtdJoiners and carpenters
- Custom Window Cleaning Services LtdCleaning companies
- Lilly's Pristine Services LtdCleaning companies
- Central Integrated Services LimitedFinishing trades
- Astronat Property Services LtdFacilities management
- Gregory Motorcare LtdMechanics and garages
- Bamber Estates LimitedProperty developers
- Superior Solutions Group LtdCleaning companies
What happens if T Mendham Building Ltd files late
If the accounts reach Companies House today, the late filing penalty is £375 (£750 if last year's accounts were also late). It rises at each step below.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Aug 2026 to 31 Aug 2026 | £150 |
| 1 to 3 months late | 1 Sep 2026 to 31 Oct 2026 | £375 |
| 3 to 6 months late | 1 Nov 2026 to 31 Jan 2027 | £750 |
| More than 6 months late | From 1 Feb 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Nov 2026 | £200 |
| 3 months late | 31 Jan 2027 | another £200 |
| 6 months late | 30 Apr 2027 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Oct 2027 | 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
- 04245065
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 3 July 2001 (25 years ago)
- Registered office
- C/O Tyrrell & Company, Unit D South Cambs Business Park, Sawston, Cambridgeshire, CB22 3JH
- Nature of business
- Construction of commercial buildings (SIC 41201)
- Year end
- 31 July (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 July 2024
- Last confirmation statement
- 3 July 2026
- Charges (mortgages)
- 2 outstanding of 25 registered
Filing notes for building contractors
Building companies often run the Construction Industry Scheme as a contractor, a subcontractor or both. CIS deductions suffered during the year are set against the PAYE bill, and any unrecovered balance at the year end matters when the accounts are drawn up.
Similar companies
Other active building contractors.
Frequently asked questions
When are T Mendham Building Ltd's accounts due?
T Mendham Building Ltd's accounts were due at Companies House on 31 July 2026 and the register shows them as overdue.
When is T Mendham Building Ltd'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 July 2025, due by 31 July 2026, and one for the period to 31 October 2025, due by 31 October 2026. Corporation tax is payable 9 months and 1 day after the end of each.
Is T Mendham Building Ltd still trading?
T Mendham Building Ltd is listed as active on the Companies House register (checked 13 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 T Mendham Building Ltd do?
T Mendham Building Ltd is registered under Construction of commercial buildings (SIC 41201).
How old is T Mendham Building Ltd?
T Mendham Building Ltd was incorporated on 3 July 2001, 25 years ago.
What is the penalty if T Mendham Building 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 T Mendham Building Ltd on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026, rechecked 13 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.