- Companies
- Plumbers and heating engineers
- Benfleet
- Mylex Group Ltd
Mylex Group Ltd
- Company number
- 16620687
- Incorporated
- 31 Jul 20251 year trading
- Registered office
- 19 Villiers Way, Benfleet, SS7 3BH
- Nature of business
- Plumbing, heat and air-conditioning installation
Mylex Group Ltd is a 1-year-old private limited company registered in Benfleet, company number 16620687, one of 72 plumbing and heating companies in Benfleet. Its next accounts are due at Companies House on 30 April 2027, and its first CT600 is due at HMRC on 30 July 2027.
Key dates
This company has not filed accounts yet. First accounts are due 21 months after incorporation, and the first period can run longer than a year.
Is this your company?
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Where Mylex Group Ltd is registered
The registered office is in Benfleet (SS7), in the Castle Point local authority area, East of England. Show SS7 3BH on a map.
Other trade companies in SS7
- Byways Property Maintenance LtdFinishing trades
- Flowtech Drainage and Groundwork Solutions LimitedCivil engineering
- NMP Property Investors LtdProperty developers
- Apex Engineering PSV Specialist LimitedMechanics and garages
- Maher Heights Scaffolding LtdScaffolders
- Prime & Plaster LtdPlasterers
- Estuary Electrical Solutions LtdElectricians
- DS Garden Maintenance LtdLandscapers and gardeners
What happens if Mylex Group 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 30 April 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 May 2027 to 31 May 2027 | £150 |
| 1 to 3 months late | 1 Jun 2027 to 31 Jul 2027 | £375 |
| 3 to 6 months late | 1 Aug 2027 to 31 Oct 2027 | £750 |
| More than 6 months late | From 1 Nov 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Aug 2027 | £200 |
| 3 months late | 31 Oct 2027 | another £200 |
| 6 months late | 31 Jan 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jul 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
- 16620687
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 31 July 2025 (1 year ago)
- Registered office
- 19 Villiers Way, Benfleet, SS7 3BH
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
- Year end
- 31 July (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 30 July 2026
Filing notes for plumbing and heating companies
Plumbing and heating companies frequently work under CIS for main contractors and also directly for homeowners, so turnover can mix CIS and non-CIS income.
Similar companies in Benfleet
Other active plumbing and heating companies registered in Benfleet.
- N Hawes Plumbing & Heating Limited2007
- N K Heating & Plumbing Ltd2016
- Of1 Plumbing and Heating Limited2025
- One Stop Cooling & Heating Ltd2022
- P&D Mechanical Services Ltd2026
- Park Lane Plumbing & Heating Ltd2018
- Partnered Heating Limited2026
- PDT Services (Essex) Limited2026
All plumbing and heating companies in Benfleet · All trades in Benfleet · Plumbers and heating engineers across the UK
Frequently asked questions
When are Mylex Group Ltd's accounts due?
Mylex Group Ltd's next accounts are due at Companies House by 30 April 2027 (in 199 days), covering the period to 31 July 2026.
When is Mylex Group 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 30 July 2026, due by 30 July 2027, and one for the period to 31 July 2026, due by 31 July 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Mylex Group Ltd still trading?
Mylex Group 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 Mylex Group Ltd do?
Mylex Group Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220).
How old is Mylex Group Ltd?
Mylex Group Ltd was incorporated on 31 July 2025, 1 year ago.
What is the penalty if Mylex Group 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 Mylex Group 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.