- Companies
- Plumbers and heating engineers
- London
- Sonyside Ltd
Sonyside Ltd
- Company number
- 17342479
- Incorporated
- 15 Jul 2026
- Registered office
- 66 Paul Street, London, England, EC2A 4NA
- Nature of business
- Plumbing, heat and air-conditioning installation; Retail sale via mail order houses or via Internet
Sonyside Ltd is a newly incorporated private limited company registered in London, company number 17342479, one of 2,972 plumbing and heating companies in London. Its next accounts are due at Companies House on 15 April 2028, and its first CT600 is due at HMRC on 14 July 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 Sonyside Ltd is registered
The registered office is in London (EC2A), in the Hackney local authority area, London. Show EC2A 4NA on a map.
Other trade companies in EC2A
- Simlan Management LtdCleaning companies
- Renova Secure LtdBuilders
- Auraglasspartitions LtdGlaziers
- A2D Professional Cleaning LtdCleaning companies
- Matson Co. LtdProperty developers
- Paint Hub LimitedMechanics and garages
- SJK Construction & Management LtdBuilders
- Cenlora Cleaning Group LtdCleaning companies
Shared registered office
1,510 companies on our pages use this registered office address. An address shared this widely is usually an accountant's office or a company formation agent's service address, not where the business trades from.
What happens if Sonyside 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 15 April 2028.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 16 Apr 2028 to 15 May 2028 | £150 |
| 1 to 3 months late | 16 May 2028 to 15 Jul 2028 | £375 |
| 3 to 6 months late | 16 Jul 2028 to 15 Oct 2028 | £750 |
| More than 6 months late | From 16 Oct 2028 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Aug 2028 | £200 |
| 3 months late | 31 Oct 2028 | another £200 |
| 6 months late | 31 Jan 2029 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jul 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
- 17342479
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 15 July 2026
- Registered office
- 66 Paul Street, London, England, EC2A 4NA
- Nature of business
- Plumbing, heat and air-conditioning installation (SIC 43220)
Retail sale via mail order houses or via Internet (SIC 47910) - Year end
- 31 July (accounting reference date)
- Accounts type
- No accounts filed yet
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 London
Other active plumbing and heating companies registered in London.
- Sos Heating & Plumbing Ltd2008
- Sos Plumbers Ltd2026
- South East Plumbing Ltd2023
- South Flow Plumbing & Heating Limited2025
- South London & Surrey Gas and Heating Ltd2023
- South London Heating Limited2007
- South Star Plumbers Limited2018
- South West 4 Property Services Ltd2021
All plumbing and heating companies in London · All trades in London · Plumbers and heating engineers across the UK
Frequently asked questions
When are Sonyside Ltd's accounts due?
Sonyside Ltd's next accounts are due at Companies House by 15 April 2028 (in 551 days), covering the period to 31 July 2027.
When is Sonyside 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 14 July 2027, due by 14 July 2028, and one for the period to 31 July 2027, due by 31 July 2028. Corporation tax is payable 9 months and 1 day after the end of each.
Is Sonyside Ltd still trading?
Sonyside 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 Sonyside Ltd do?
Sonyside Ltd is registered under Plumbing, heat and air-conditioning installation (SIC 43220); Retail sale via mail order houses or via Internet (SIC 47910).
How old is Sonyside Ltd?
Sonyside Ltd was incorporated on 15 July 2026, less than a year ago.
What is the penalty if Sonyside 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 Sonyside 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.