- Companies
- Plumbers and heating engineers
- Royston
- A to Z External Solutions Ltd
A to Z External Solutions Ltd
- Company number
- 16793550
- Incorporated
- 17 Oct 2025
- Registered office
- Unit 1 Ashbridge Farm Fen Road, Bassingbourn, Royston, SG8 5PG
- Nature of business
- Plumbing, heat and air-conditioning installation; Other construction installation
A to Z External Solutions Ltd is a newly incorporated private limited company registered in Royston, company number 16793550, one of 24 plumbing and heating companies in Royston. Its next accounts are due at Companies House on 17 July 2027, and its first CT600 is due at HMRC on 16 October 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.
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Where A to Z External Solutions Ltd is registered
The registered office is in Royston (SG8), in the South Cambridgeshire local authority area, East of England. Show SG8 5PG on a map.
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- CB Composite LtdMachinery repair and installation
- Energy 0 (Zero) LimitedProperty developers
- Common Lane LtdProperty developers
- Florina Claudia Motorsport LtdMechanics and garages
- Honeycomp LtdMachinery repair and installation
- All-Good Aviation LtdMachinery repair and installation
- Acb LtdBuilders
Also registered at this address
1 other company uses the same registered office as A to Z External Solutions Ltd.
- A to Z Energy Solutions LtdInstallers
What happens if A to Z External Solutions 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 17 July 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 18 Jul 2027 to 17 Aug 2027 | £150 |
| 1 to 3 months late | 18 Aug 2027 to 17 Oct 2027 | £375 |
| 3 to 6 months late | 18 Oct 2027 to 17 Jan 2028 | £750 |
| More than 6 months late | From 18 Jan 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
- 16793550
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 17 October 2025
- Registered office
- Unit 1 Ashbridge Farm Fen Road, Bassingbourn, Royston, SG8 5PG
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
Other construction installation (SIC 43290) - Year end
- 31 October (accounting reference date)
- Accounts type
- No accounts filed yet
- Last confirmation statement
- 18 December 2025
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 Royston
Other active plumbing and heating companies registered in Royston.
- BG Boiler Servicing Ltd2025
- Bti Plumbing and Heating Ltd2017
- H2O Gas, Heating & Plumbing Services Limited2003
- I.C.E. Plumbing and Heating Limited2025
- Insink Plumbing & Heating Limited2017
- J.J.A.Y Gas & Oil Heating Services Limited2016
- JNB Plumbing & Heating Limited2019
- Libra Mechanical Services Limited2014
All plumbing and heating companies in Royston · All trades in Royston · Plumbers and heating engineers across the UK
Frequently asked questions
When are A to Z External Solutions Ltd's accounts due?
A to Z External Solutions Ltd's next accounts are due at Companies House by 17 July 2027 (in 277 days), covering the period to 31 October 2026.
When is A to Z External Solutions 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 16 October 2026, due by 16 October 2027, and one for the period to 31 October 2026, due by 31 October 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is A to Z External Solutions Ltd still trading?
A to Z External Solutions 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 A to Z External Solutions Ltd do?
A to Z External Solutions Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220); Other construction installation (SIC 43290).
How old is A to Z External Solutions Ltd?
A to Z External Solutions Ltd was incorporated on 17 October 2025, less than a year ago.
What is the penalty if A to Z External Solutions 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 A to Z External Solutions 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.