- Companies
- Cleaning companies
- Mynydd Cleaning & Maintenance Ltd
Mynydd Cleaning & Maintenance Ltd
- Company number
- 12936629
- Incorporated
- 7 Oct 20206 years trading
- Registered office
- 29 High Street, Criccieth, LL52 0BS
- Nature of business
- General cleaning of buildings
Mynydd Cleaning & Maintenance Ltd is a 6-year-old private limited company registered in Criccieth, company number 12936629, one of the UK's cleaning companies. Its next accounts are due at Companies House on 31 July 2027, and the CT600 for the period to 31 October 2026 is due at HMRC on 31 October 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 £22K (+57.6%) on the year before, to £59K.
- Net assets rose in 3 of 4 year-on-year comparisons on record.
- Current assets of £182K against £108K owed within a year: 1.7 times cover.
- 23 employees on average, down from 24 the year before.
- Balance sheets on record for 5 years, 2021 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Oct 2025 | £59K | £56K | £182K | £108K | 23 |
| 31 Oct 2024 | £38K | £37K | £114K | £54K | 24 |
| 31 Oct 2023 | £15K | £12K | £66K | £40K | 11 |
| 31 Oct 2022 | £19K | £19K | £65K | £31K | 11 |
| 31 Oct 2021 | £12K | £10K | £42K | £20K | 22 |
Public contracts won
Mynydd Cleaning & Maintenance Ltd has 2 public sector contract awards on record; the ones with their own published value total £460K, from 2024 to 2026. Source: Contracts Finder and Find a Tender award notices. For 1 of them the published figure is a shared or multi-year ceiling (a framework place, a multi-supplier award, or more than a small company could hold alone), so no value is shown. These were matched by the company's exact name because the notice gave no company number.
Awards by year
Main buyers
- Adra (Tai) Cyf1 award
- Snowdonia National Park Authority/Awdurdod Parc Cenedlaethol Eryri1 award
| Buyer | Contract | Value | Awarded |
|---|---|---|---|
| Adra (Tai) Cyf | Void Property Cleaning Framework | Ceiling, not shown | 20 Apr 2026 |
| Snowdonia National Park Authority/Awdurdod Parc Cenedlaethol Eryri | Expression of Interest Cleaning Contract | £460K | 1 May 2024 |
Where Mynydd Cleaning & Maintenance Ltd is registered
The registered office is in Criccieth (LL52), in the Gwynedd local authority area, Wales. Show LL52 0BS on a map.
Other trade companies in LL52
- North Wales Sprinklers LtdPlumbers and heating engineers
- Ieuan Rowlands Construction LimitedBuilders
- James & Son Electrical LtdElectricians
- Thurgood Heating LtdPlumbers and heating engineers
- DHS Kitchen Installations LimitedFinishing trades
- 316 Marine Fabrication LimitedMachinery repair and installation
- I J Plastering LtdPlasterers
- D W Williams Construction Contracting LtdProperty developers
Also registered at this address
11 other companies use the same registered office as Mynydd Cleaning & Maintenance Ltd.
- Aberwen CyfProperty developers
- Andrew Roberts LimitedPlumbers and heating engineers
- Canolfan MOT Centre LimitedMechanics and garages
- DK Scaffolding Wales LimitedScaffolders
- Gethin Scott LimitedElectricians
- Hardy's Recovery LimitedMechanics and garages
- I J Plastering LtdPlasterers
- Ian Ambrose LimitedProperty developers
- James & Son Electrical LtdElectricians
- Partneriaeth V Jones CyfSpecialist contractors
- R. Williams & Co. LimitedBuilders
What happens if Mynydd Cleaning & Maintenance 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 July 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 Aug 2027 to 31 Aug 2027 | £150 |
| 1 to 3 months late | 1 Sep 2027 to 31 Oct 2027 | £375 |
| 3 to 6 months late | 1 Nov 2027 to 31 Jan 2028 | £750 |
| More than 6 months late | From 1 Feb 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Nov 2027 | £200 |
| 3 months late | 31 Jan 2028 | another £200 |
| 6 months late | 30 Apr 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Oct 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
- 12936629
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 7 October 2020 (6 years ago)
- Registered office
- 29 High Street, Criccieth, LL52 0BS
- Nature of business
- General cleaning of buildings (SIC 81210)
- Year end
- 31 October (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 October 2025
- Last confirmation statement
- 6 October 2025
- Charges (mortgages)
- 2 outstanding of 2 registered
Filing notes for cleaning companies
Cleaning companies are often staff-heavy, so wages, pension contributions and the employment allowance all show up in the accounts.
Similar companies
Other active cleaning companies.
Frequently asked questions
When are Mynydd Cleaning & Maintenance Ltd's accounts due?
Mynydd Cleaning & Maintenance Ltd's next accounts are due at Companies House by 31 July 2027 (in 291 days), covering the period to 31 October 2026.
When is Mynydd Cleaning & Maintenance Ltd's CT600 due?
The CT600 for the period to 31 October 2026 is due at HMRC by 31 October 2027, 12 months after the period end. The corporation tax itself is payable earlier, by 1 August 2027.
Is Mynydd Cleaning & Maintenance Ltd still trading?
Mynydd Cleaning & Maintenance 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 Mynydd Cleaning & Maintenance Ltd do?
Mynydd Cleaning & Maintenance Ltd is registered under General cleaning of buildings (SIC 81210).
How old is Mynydd Cleaning & Maintenance Ltd?
Mynydd Cleaning & Maintenance Ltd was incorporated on 7 October 2020, 6 years ago.
Has Mynydd Cleaning & Maintenance Ltd won public sector contracts?
Yes. Mynydd Cleaning & Maintenance Ltd has 2 contract awards from public bodies on Contracts Finder and Find a Tender (those with their own published value total £460K), most recently from Adra (Tai) Cyf.
What is the penalty if Mynydd Cleaning & Maintenance 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 Mynydd Cleaning & Maintenance 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.