- Companies
- Electricians
- Oswestry
- Castell Connect Services Ltd
Castell Connect Services Ltd
- Company number
- 17385359
- Incorporated
- 6 Aug 2026
- Registered office
- 7 Lower Brook Street, Oswestry, Shropshire, SY11 2HG
- Nature of business
- Electrical installation
Castell Connect Services Ltd is a newly incorporated private limited company registered in Oswestry, company number 17385359, one of 24 electrical contractors in Oswestry. Its next accounts are due at Companies House on 6 May 2028, and its first CT600 is due at HMRC on 5 August 2028.
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.
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Where Castell Connect Services Ltd is registered
The registered office is in Oswestry (SY11), in the Shropshire local authority area, West Midlands. Show SY11 2HG on a map.
Other trade companies in SY11
- BG Electrics LtdElectricians
- Valley Roofing Landscaping Group LimitedRoofers
- Valley Roofing and Landscaping Group LimitedRoofers
- Dependable Roofer Buildings and Construction LimitedRoofers
- Cosy Homes Renovations LtdPlumbers and heating engineers
- Stone Story Sculptures LtdSpecialist contractors
- Atk Trans LimitedGroundworks and demolition
- Callaghan Engineering LtdBuilders
Also registered at this address
10 other companies use the same registered office as Castell Connect Services Ltd.
- Barry Hawkins (Wem) LimitedLandscapers and gardeners
- Burgoyne Developments LimitedProperty developers
- Dne Electrical LimitedElectricians
- DWR Property Development LtdProperty developers
- Illumina Electrotechnical Engineering LtdElectricians
- MHV Solutions LtdCivil engineering
- MML Tyre Repairs LtdMechanics and garages
- Pant Motor Bodies LimitedMechanics and garages
- Shropshire Cleaners LtdCleaning companies
- Teiars Llangefni Tyres LtdMechanics and garages
What happens if Castell Connect 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 6 May 2028.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 7 May 2028 to 6 Jun 2028 | £150 |
| 1 to 3 months late | 7 Jun 2028 to 6 Aug 2028 | £375 |
| 3 to 6 months late | 7 Aug 2028 to 6 Nov 2028 | £750 |
| More than 6 months late | From 7 Nov 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Sep 2028 | £200 |
| 3 months late | 30 Nov 2028 | another £200 |
| 6 months late | 28 Feb 2029 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Aug 2029 | 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
- 17385359
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 6 August 2026
- Registered office
- 7 Lower Brook Street, Oswestry, Shropshire, SY11 2HG
- Nature of business
- Electrical installation (SIC 43210)
- Year end
- 31 August (accounting reference date)
- Accounts type
- No accounts filed yet
Filing notes for electrical contractors
Electrical contracting companies are often a director plus a van and tools. Most fall within the micro-entity rules, so the accounts filed at Companies House are short, and the CT600 carries the tax detail.
Similar companies in Oswestry
Other active electrical contractors registered in Oswestry.
- D J Woosnam Electrical Contractors Limited2023
- Dne Electrical Limited2016
- Echo Integrations Ltd2018
- Energy Channeling Electrical Contractors Ltd2003
- GCD Electrical Engineering Ltd2025
- Illumina Electrotechnical Engineering Ltd2024
- Innovate and Sustain Ltd2025
- Inspectionex Ltd2019
All electrical contractors in Oswestry · All trades in Oswestry · Electricians across the UK
Frequently asked questions
When are Castell Connect Services Ltd's accounts due?
Castell Connect Services Ltd's next accounts are due at Companies House by 6 May 2028 (in 571 days), covering the period to 31 August 2027.
When is Castell Connect Services 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 5 August 2027, due by 5 August 2028, and one for the period to 31 August 2027, due by 31 August 2028. Corporation tax is payable 9 months and 1 day after the end of each.
Is Castell Connect Services Ltd still trading?
Castell Connect 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 Castell Connect Services Ltd do?
Castell Connect Services Ltd is registered under Electrical installation (SIC 43210).
How old is Castell Connect Services Ltd?
Castell Connect Services Ltd was incorporated on 6 August 2026, less than a year ago.
What is the penalty if Castell Connect 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 Castell Connect 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.